A friend called me saying his 1TB SD Card he was using for backup stopped working on Windows & MacOS

Paul Wed, 07
Aug 2019 06:49:34 GMT in alt.comp.freeware, wrote:

Diesel wrote:


You're over thinking this and completely ignoring another
possibility, Paul. That being, one or more voltage/current
regulation/filtering components (and not the memory chips) has
failed.

Show me the regulator

Sure.

https://whatis.techtarget.com/definition/resistor

A resistor is an electrical component that limits or regulates the
flow of electrical current in an electronic circuit. Resistors can
also be used to provide a specific voltage for an active device such
as a transistor.
*** end definition of a resistor.

Look to the upper left and right hand side of the picture visible
with your link. Can you read the silk screen printing? You may need
to zoom in. The r(number) is a resistor, and the c(number) is a
capacitor. It has more than one of both. And these are quite common
in regulation circuitry.

You're welcome, btw. I'm sure it was a simple oversight on your part.

dumb ass.

Message-ID:
http://al.howardknight.net/msgid.cgi?ID=156522647300

On Wed, 07 Aug 2019 09:28:45 +0100, "p-0''0-h the cat (coder)"
wrote:

Have you completely lost your mind?

We are talking about an *SD* card.

This is what is inside.

https://www.youtube.com/watch?v=dmm790fXUyI

Ah! I take that back. Some do seem to have tiny surface mount
components and chip pins which look worth a reflow.

*** end paste of poohs update to himself.

Pooh didn't ask me to show him any regulator, though. I suppose he
knows what a resistor does, then. And was able to see a few of them,
sitting on the board in the picture you offered up.

I didn't write any insulting comments to you, and don't really know
why you sought fit to write one to me in the manner in which you did.

I don't know why you'd suggest pin probing and skip past the first
things that should be checked out when dealing with electronics that
aren't working properly. Which is: visable damage to one or more
components, and cold solder connection points.

If no visible damage, and no apparent cold solder connection points,
you're supposed to move on to verify the support circuitry is in
working order, and if all that checks out, then you move further down
the food chain to the controller and memory chip(s). If you jump
right in to pin probing and you do have cold solder connections
and/or an issue with one or more components on the external support
circuitry, your results will be compromised and possibly useless to
you.

I'd be willing to bet a small amount that you've never at this point
succesfully brought an sdcard of any size back to life once windows
couldn't see it in device manager anymore. Is that a fair statement?

That's not the case for me. I have brought some back, fully intact
datawise and fully accessable, by replacing SMD components on the
board that had failed, and reworking some bad solder connections due
to abuse of the card by it's owner.

I've even gone so far as to replace (for testing) a suspected bad
controller from an identical scrap one; it worked! I was able to pull
the memory contents just fine.

And no, the rework wasn't nearly as unbearable as you might think; I
cheated by using SRA's FAST CHIP. I highly recommend the stuff, it's
absolutely fantastic. It makes rework alot easier and much less risk
of you doing any harm to boards you're doing a parts salvage session
on. You can drop ports, components within seconds using the stuff.
It's the fastest way I know so far to desolder something.

Wicks, pumps, heated air gun is so old school compared to the ease of
that stuff for most things. A wick, pump and gun can still come in
handy in other situations, the wick/pump much more so.

The only bone to pick would be the price. It's expensive. Oh, and you
have to handle it with care, it's quite brittle. So that's a minor
quabble I suppose for some. The easiest fix for that issue is not to
buy it rolled, but to buy it in rod form instead. No risk of breaking
pieces off as you unroll it.

I really don't know why you opted to call me a dumbass, there, Paul.
I'm hardly one and up until now? I wasn't aware you had any issues
with me. I have none, as far as I know, with you. I look forward to
your long and sometimes boring to many posts providing technical
details. Many of which I've saved into my techie on the go database.
With full credit to you. Sorry if you took my previous replies on
this subject as some attack on you, they weren't intended to be.

And thanks for the opportunity to defend myself by sharing additional
knowledge with you and others reading. Perhaps by following the
proper electronic troubleshooting path that I laid out, instead of
skipping steps as yours does, will allow someone else to recover a
'broken' sd card that has something they would like to take a shot at
getting back. And maybe, just maybe, this will drill into their heads
how important redundant backups really are. They won't always luck
out and be able to fix the sd card and/or get the data back.



--
A cat is easier to train than a man

"p-0''0-h the cat (coder)"
Wed, 07 Aug 2019
09:28:34 GMT in alt.comp.freeware, wrote:

On Wed, 07 Aug 2019 09:28:45 +0100, "p-0''0-h the cat (coder)"
wrote:

Have you completely lost your mind?

We are talking about an *SD* card.

This is what is inside.

https://www.youtube.com/watch?v=dmm790fXUyI

Ah! I take that back. Some do seem to have tiny surface mount
components and chip pins which look worth a reflow.

[g]

As for your previous post, Didn't I already tell you about this kewl
as ****ing hell solder alloy? I've been using the SRA FAST CHIP
clone.

It's also known as QuikChip. Good stuff.

I've made the money I spent on a 4.5ft worth of small rods in a tube
many times over, fixing broken SD cards. [g]

I won't claim to have fixed them all, in some cases, the chips
themselves are fuxored and I couldn't recover them. But, the majority
of the time, it wasn't the chips themselves, but the supporting
circuitry either damaged or bad connections. Both of those are quite
fixable - in my case, I have the necessary tools and equipment; I
suspect you do as well.

Oh, and thanks for correcting yourself, even if you didn't want to do
me any favors. This is one case where I can't rub your nose in any
pile of ****.

--
"I like your Christ. I don't like your Christians. They are so unlike
your Christ." - author unknown.

"p-0''0-h the cat (coder)"
Wed, 07 Aug 2019
08:28:45 GMT in alt.comp.freeware, wrote:

On Wed, 7 Aug 2019 05:31:19 -0000 (UTC), Diesel

[snip]

It's not necessarily all dead, Arlen. You could have a blown
capacitor and/or resistor. A tiny component that takes moments to
test and replace, if it's bad. I'm surprised nobody has suggested
examining the components and looking for cold solder joints before
delving deeper into probing the memory stick.

Have you completely lost your mind?

Nope.

We are talking about an *SD* card.

I'm well aware of that. Working on an SD card is no worse really than
working on the tiny mainboards found in most modern cell phones. It's
the same tools infact. (for the component/board work; Not opening the
case). Micro-soldering is a necessary evil in todays world if you do
board level repairs as I do.

I've told you for years, I'm not a typical reload windows if it's
broken comptia monkey. I only have the comptia cert because the boss
I had at the time, demanding we get 'certified' for the purposes of
his advertising campaign. I thought it was a waste of my time and
money then, and I haven't changed my mind. Nothing on the comptia
testing materials or the test itself covered some of the kinds of
work I do thats totally I.T related.

This is what is inside.

I know what's inside them. Paul and yourself are the ones who seem to
be, lacking sufficient knowledge concerning their internals. On a
good note, though, atleast you didn't provide an electronics
troubleshooting guide of sorts that starts off skipping important
troubleshooting steps that applies in a variety of trades related to
electrical and/or electronics, now that I think about it more. [g]

I've succesfully repaired several already. I don't think Pauls
repaired the first one, and, I doubt based on your replies so far in
this thread, you have either? I'll state that most of the time, it's
probably not worth the hassle and so you both get a free pass on
this. Just chill with the needlessly insulting remarks. I'm not
trying to fight with either of you and I didn't join in this
conversation by being an insulting asshole to either of you.

Now though, you can both (maybe?) offer some repair services to your
friends. Not all hope is lost when windows doesn't see the drive.
You've both been provided, solid, troubleshooting steps that unless
the memory chip(s) and or micro controller is gone (and you can't
obtain another one) which will, most of the time (based on my 1st
hand experience so far anyway) bring the card back to working order,
without data loss.

Who does your soldering?

I do. I've told you before, I've had a soldering iron of various
kinds in my hands since I was single digit age, before I could even
start public school. I can teach damn near anyone how to solder,
properly and fast. As long as they're willing to learn it and hone in
their technique with practice.

Pixies with tiny tiny hot air guns or super miniature reflow ovens?

[g] I have a variety of magnification tools at my disposal, along
with an assortment of soldering/rework stations, and an ample supply
of a very nice alloy. Thru hole, SMD, I've got the tools and
knowledge to work on both, just fine. hehehehe.

I told Arlen that I didn't know of any freeware fixes and this would
cost his friend money. The only way it wouldn't is if his friend or
himself either had the necessary tools and knowledge, or knows
somebody close to them who does that's willing to try and fix it.

I wasn't misleading him, you, or anyone else, the entire time. If
you'd spend more time reading what I actually write, instead of what
you incorrectly thought I'd written, you and I would probably get
along a lot better.

Really funny. Even for you. What a ******.

Your followup reply to yourself was after reading this one. [g]

Message-ID:
http://al.howardknight.net/msgid.cgi?ID=156522647300

On Wed, 07 Aug 2019 09:28:45 +0100, "p-0''0-h the cat (coder)"
wrote:

Have you completely lost your mind?

We are talking about an *SD* card.

This is what is inside.

https://www.youtube.com/watch?v=dmm790fXUyI

Ah! I take that back. Some do seem to have tiny surface mount
components and chip pins which look worth a reflow.

*** end paste of poohs update to himself.

Electronics professional BWAHAHAHA!!!

Yes. I am. It came in quite handy when I was still a blackhat. It was
very useful to me when I was seriously into CB/ham radio gear, too. I
could add additional wattage to my rigs***, on my own, without having
to take it to some special shop that would do it for you, off the
books.

** It's illegal to modify the output power of a cb radio beyond the
4watts for mobile and 5watts for base station. I'd tune mine, I could
easily push 20watts or more naked on the radio, without a linear.
Since alot of linears can't do anything for you on 5 watts or less,
this was a necessary thing more often than not if you wanted to run
'semi serious' heat behind it. As with other electronics/electrical
systems, if you don't have enough 'current' or push coming in,
nothing else matters, as it won't work.

That 1kilowatt FM pirate radio station I mentioned to eagle, and
others (which resulted in my first and only in person meet and greet
sent by people from the FCC), years ago when I was 12 years old was
completely built by myself, partially from scrap/salvage parts and
partially from brand new parts I'd save allowance, side income (jobs)
for from radio shack catalog; back when you could go into the store
and buy a capacitor, or transistor, or 555 timer IC, etc.

I don't see what's so funny about that, though? I thought then and
still do now that learning how something works and being able to put
that knowledge to practical use is a good thing. So, really, I don't
get the humour in what I wrote, previously.

On a side note, how come you don't know anything about the quikchip
(fastchip is a clone by another company) being in the electronics
field, with various certs (related to it?)? I can understand if you
prefer to continue using a heat gun to remove modern chips that are
soldered directly to the board, but.. it's not your only option.


--
Shh! Be vewy quiet, I'm hunting wuntime errors!

Paul Wed, 07
Aug 2019 06:47:10 GMT in alt.comp.freeware, wrote:

Diesel wrote:
Paul Tue,
06 Aug 2019 18:21:58 GMT in alt.comp.freeware, wrote:

It's pretty easy to understand.

A Critical Data section got erased... somehow.

Critical Data is anything the controller needs, to maintain
error-free data.

If the integrity of the error-free data can no longer be
guaranteed, the controller "closes up shop".

Not necessarily. A failed capacitor and/or resistor can also
cause this condition. Replacing the dead component, from first
hand experience, does tend to restore drive functionality and
access to the data it contained previously. It's not a 100%
always works solution, but it has worked on several occasions;
when I've been able to verify it's a non memory/controller
component that's gone south.

Next, you'll be telling him to use a pink
eraser on the gold pads.

In my own defense, I did say it wasn't going to be a free fix. Some
tools and knowledge are required. The knowledge is freely available,
but for the most part, you're going to have to borrow the tools
and/or purchase them if you don't already have them...

Of all the computer stuff I have in my computer
room and junk room, I've *never* had a discrete
fail.

Hmm. Interesting, as those are what typically fail prematurely on
LED lighting drivers and is primarily responsible for early CFL
driver death, too. Sometimes, the damage is relatively contained to a
specific component or nearby ones. Sometimes though, heh, the end
result is much much worse. By worse I mean, you'll have more time in
labor for seriously ****ed components, board damage (holes and traces
damaged or blown away) than you would if you just replaced the entire
board (LED power supply).

Ever seen LED parking lot lights flashing on and off like a disco
strobe light? That's usually the result of one or more SMD typically
component failures in the power supply for that LED bank. They're all
'switch mode' power supplies these days, and as a result of the
induction processes, the transistors which are used as a digital
switch or relay (without the annoying clicking sounds) take a
beating. Every single time they attempt to open the circuit, they
take a hell of a vicious arc internally from the collapse of the EMF
field on the coil they are driving. Some better designed power
supplies have clamping circuitry to try and reduce that surge coming
back to the transistor(s), but over time, the clamping components
have been surged to death and fail.

Most of the time, the manufacturer used one or more transistors just
barely large enough for the job according to it's datasheet and
didn't properly heatsink it, if they did at all. Even a TIP47
transistor will get too hot to touch within seconds of being asked to
supply 12 volts via pulsing to a transformer. The more windings in
the transformers coils, the more energy that arc is going to have
when it forms. Which means, the transistor is going to heat up that
much faster, and/or fail - and in some cases, the failure is more
than a little release of smoke. It can be, a glorious, sparky,
fireworks failure too. [g]

A simple single ended power inverter driver circuit. Using a measily,
16watt output 12/120volt ac transformer (it's a small transformer
used previously as a power supply for a cdplayer) will cause that
transistor to get super hot, within seconds driving said transformer.

The larger the transformer (winding wise) the harder the arc.. which
means, higher voltage and current and more heat that has to be dealt
with, by the transistor opening and closing the circuit.

Since you've never had discreet (what you're calling SMD?) component
failure that you've personally observed, I wonder just how many
boards you've actually worked on that made use of them?

What particular reason would I have for
putting that on the debug chart ?

First of all, the steps you opted to skip are the first ones you
should be using when you're troubleshooting a non working circuit
board. For that matter, they are the same steps initially that you'd
use for troubleshooting most anything. See if the power is on, and
everything that's supposed to be getting power is AND at the expected
levels.

Second, The card has been subject to heavy vibration over an extended
period of it's life, It's been flying in a drone...Along with
insertion/removal likely several times..Subjecting the board itself
to more stress. Board stress can lead to broken solder connections,
along with premature component failure as a result of the broken
solder connections and or short circuit conditions if the board is
flexed too much and something makes contact when it shouldn't do so.

And third,

jtag isn't going to work if you have component failure or
partially/fully disconnected pins. Pin probing is also going to give
you bad results, if the components aren't making a solid connection
to the board. It's entirely possible to hit a pin with your probe and
get a solid connection between it and your probe but that pin be
completely seperated from the pad it's supposed to be connected to.
As a result, you may be getting a false reading.

It's certainly not going to hurt anything by having a look around,
and might even save you alot of time probing pins later on, if it
turns out being one of the aforementioned problems they could have
with the card. Ie: fix the solder issue, replace found to be bad
support circuitry components, test card. If it's still not working,
proceed further by following additional steps you provided.

https://components101.com/misc/micro...nout-datasheet

You or someone else may find that urls contents useful. It's very
useful for troubleshooting purposes and lays out generally what
everything is doing on the typical card.


--
I fed some lemon to my cat and now I have a sour puss.

"Arlen G. Holder"
Tue, 06 Aug 2019 18:35:13 GMT in
alt.comp.freeware, wrote:

I guess I'll have to take Diesel up on his always make-believe
offers of his sheer genius, where he and nospam should go into
business together what with all their claims of imaginary
functionality overall.

Message-ID:
http://al.howardknight.net/msgid.cgi?ID=156522647300

On Wed, 07 Aug 2019 09:28:45 +0100, "p-0''0-h the cat (coder)"
wrote:

Have you completely lost your mind?

We are talking about an *SD* card.

This is what is inside.

https://www.youtube.com/watch?v=dmm790fXUyI

Ah! I take that back. Some do seem to have tiny surface mount
components and chip pins which look worth a reflow.

*** end paste of poohs update to himself.

As I've told you, many times before, I don't make **** up, I'm always
subject to peer review and if I were talking ****, writing ****,
and/or passing off bad advice that could do more harm than good, my
peers (people who actually do know this stuff too) would call me out
on it. Even people who aren't my peers would.

Pooh tried, then had to backup and eat his own words. Which is rare
for him. So rare, I thanked him for actually doing that, instead of
trolling and side stepping it when I responded with urls to pictures
showing other SMD components present, along side the memory chip(s)
and controller.

Which is what I was planning on doing when I read his follow up
reply. I can't honestly say he responded to cover his own ass so I
couldn't rub is nose in the urls I'd share after reading his post, or
because he corrected himself on the principle that he was incorrect
and wanted to set it straight - having nothing to do with me.

My claims are based on 1st hand knowledge where I've succesfully
repaired many SD cards, performed data recovery on several SSD drives
(I have used a very expensive piece of gear on more than one occasion
to do this, but the data was important enough for the client to pay
me for it), etc. I share information that I've learned on my own
and/or from others I trust in the repair industries. So far, that one
piece of gear is probably the most expensive piece of equipment for
it's physical size that I have here at the shop.

It's not an every day used item either, so even at the data recovery
rates I charge specifically for SD/SSD devices, I won't recoup that
particular investment for a long time. Atleast not solely on the
monies generated via data recovery. And it's worthless on mechanical
drives. It's only for SSD technologies. You could buy a nice used
car/truck/suv/van for what I spent on that alone, before taxes and
shipping.

I'm a professional in all I do, aside from usenet, Arlen. Whether you
like me as person or not, doesn't matter. I can be of use to you, I
have extensive practical, verified working, knowledge on many
electronics/electrical subject matters. I'm even qualified (as in
licensed, lol - it is expired though; it's not worth my funds to
renew it, I don't do enough of that type of work and when I am doing
that sort of work, it's taking time away from more profitable and
physically easier work I do here) to come out, troubleshoot, and most
likely, fix the issue your friend is having with that washing
machine; concerning the voltage present where it shouldn't be).

In other words, I had a valid equ to a journeyman's electrical
license, too Arlen. I've done retro fit houses, new houses,
commercial automotive shops, etc. Even some small industrial work;
electro-mechanical in nature. Basically, one was a giant microwave
and the other was a gigantic plastic mold injection machine.

I'll be happy to help you in anyway I possibly can with subjects I
have useful knowledge of. I'm not going to cheat google it up and try
to pass myself off as knowing something I don't, unlike some other
posters who would, and have. But, that willingness to help you does
come with a string attached. I don't appreciate your far less than
adult attitude you use when corresponding with me. You need to adjust
it and treat me with a bit more respect than you have previously.
When and if you decide to do so, I'll be happy to share useful
troubleshooting tips when appropriate and complete, do this to fix it
instructions when needed, if it's something I can help you with.

As long as you continue writing the trash you did above though, I
won't. I responded to you in this thread with the intention of
helping you, not fighting with you or anyone else. Various other
posters have shared with you what they know concerning it, leaving
you in the same position you were in prior to posting your question.

On the other hand, I have provided you solid, as in tested in the
field, as in tested in real life, methods for troubleshooting and
walking away with a possible repair, outright of your friends broken
sdcard.

I provided you this information, nobody else in this thread has so
far. One person ate his own words, another called me a dumbass
(although his advice skipped standard troubleshooting steps that
should have been followed prior to doing anything he suggested - and
required a refresher in the purposes of a resistor in a circuit as
well as having to be shown where in the picture he selected to share
they were present and visible; makes me wonder how much knowledge
he's shared is from his brain, vs that of a copy/paste google result
at this point), and a third understands what I wrote, but does not
have the tools (or access to them) to do the work themselves.

Thanks for always being purposefully helpful, where your
pessimistic response tells me what I need to know - as I trust you
as you've always been both purposefully helpful and credible (as
am I, because I care).

Paul is generally credible, as far as I'm aware. Until now, I've
never even suspected his advice might be the work of copy and paste;
I'm hoping that turns out not being the case, but, I don't typically
run into electronics knowledgeable people who have to be shown where
a regulator component could be located on a picture of a board they
selected to share.. I'll chalk it upto as him simply missing it this
time, the picture isn't the best and they are tiny.

As far as you being credible, not hardly. I've caught you myself
putting words in my mouth and that of others during previous
discussions with you. The latest one would be the HP laserjet printer
you were having a problem with. When I pointed out that what you
claimed someone wrote didn't match, providing MIDs to prove it, I
heard crickets from you concerning it. [g] Which is quite typical
with you, when you've been caught and questioned about something you
wrote. Along with your childish rants and insults, that is.

I've *never* had these experiences with Paul, and until I read his
replies to me today, didn't even know he might? have a problem of
some kind with me.

Thanks.

Either way, your **** and that of your friends look just fine from my
house. [g]


--
A friend in need is someone to avoid.

Arlen G. Holder wrote:
A friend called me saying his 1TB Lexar SD Card he was using for backup
suddenly stopped working on Windows & MacOS.

Is there a tool to check a card that won't even show itself to the desktop?

It doesn't show up in the Windows Device Manager.

He tried a bunch of physical tricks (e.g., clean contacts, tape over notch,
write tab flipping back & forth, etc.) where this question is about
troubleshooting the card itself.

Other cards work fine so it's the card - not the desktop.

Any suggestions to figure out what's wrong with the SD card?

Here is an article for your consumption.

https://petapixel.com/2018/10/02/les...-card-failure/

"For comparison, here is the percentage of 1-star reviews for a few other UHS-II cards:

Sony M: 3%
Sony G: 6%
SanDisk: 7%
Lexar 1000x: 15%
Lexar 2000x: 17%"

The advice from that article is to critically
examine the history of the product. As it appears
they're just like disk drives, in that some disk
drives were maybe 4X more likely to fail than
similar drive models in the same generation.

"The card that failed is a Lexar Professional 1000x 64GB SDXC UHS-II/U3"

https://petapixel.com/assets/uploads...rd-800x266.jpg

"Diagnostics - Severe Damage"

(Ha. When they haven't actually scanned the chips yet.)

The data recovery companies are always very clever in their
terminology, never hinting what the real problem is. I like
the nice round number price of $1741.05 for a 64GB part. I hope
the recovery price is not a simple linear scaling for capacity,
as the 1TB SD would be astronomically expensive to recover.
The analysis seems to suggest they haven't taken the cover
off the SD at the point in time they gave the quote. They
might have to remove the chips with hot air, in order to
connect them to a device for readout. Maybe that chip
form factor lends itself to the usage of a clip,
but there might be other contacts we can't see in
the picture.

I tried to find an actual "spec" for a 1TB SD, to
see what the power consumption is, and there is
no information of that type at all.

Paul

On Thu, 8 Aug 2019 04:10:36 -0000 (UTC), Diesel wrote:

Either way, your **** and that of your friends look just fine from my
house. [g]

Hi Diesel,

FACTS.

You first lost your credibility Diesel when you claimed you knew how to do
something as simple as _write_ to the iOS visible file sytem from Linux,
and you couldn't even figure out where in my tutorial that I had
accidentally skipped a step (which I had documented years prior so I knew
all along - but you claimed it was trivial - and yet - you lied as you
couldn't figure it out).

You then lost more credibility claiming comletely wrong information about
connecting Android and Windows via ftp & mtp, etc., and then claiming you
had a "secret" mechanism to tie the tools together, which, as with all
bull****ters on Usenet (like nospam for example, and Frank Slootweg), never
materializes.

I've gotten to the point that you're just funny, Diesel, since your
credibility, and that of nospam and Frank Slootweg and Snit and quite a few
others, is worse than the results of a simple coin toss.

You're all utterly worthless in terms of sharing added value on Usenet.
--
I'm done with you on this thread as you add _negative_ value, Diesel.

"Arlen G. Holder"
Thu, 08 Aug 2019 05:56:33 GMT in
alt.comp.freeware, wrote:

On Thu, 8 Aug 2019 04:10:36 -0000 (UTC), Diesel wrote:

Either way, your **** and that of your friends look just fine
from my house. [g]

Hi Diesel,

FACTS.

Great. You claim to only deal in those things, but, I've yet to see
evidence to support that particular claim. Hopefully your reply is
going to impress me by presenting a lot of them. Naturally, since
you're going to present facts (all caps?), they can be independently
verified as being accurate by one or more third parties, including
myself, then...

You first lost your credibility Diesel when you claimed you knew
how to do something as simple as _write_ to the iOS visible file
sytem from Linux, and you couldn't even figure out where in my
tutorial that I had accidentally skipped a step (which I had
documented years prior so I knew all along - but you claimed it
was trivial - and yet - you lied as you couldn't figure it out).

Do you have an MID you can share that supports anything wrote there?
My client keeps a copy of every single post I've sent out, going back
well over a decade. It's local storage search that could use some
help, but is functional, cannot find any such posts either - Atleast
not with the search parameters I tried. :-(

I'm usually pretty good at finding things to refresh my memory too,
so this is a bit annoying for me. You are more than welcome to make
suggestions on what I could use for search terms if you'd like. The
posts I was able to find using said search terms didn't indicate I
was having problems moving files around, sharing folders, etc, on
ios, android, linux or my windows systems, instead, they were mostly
replies to you, correcting you on your universal 'file sliding'
tutorial which started your entire issue with me in the first place.

You later asked about sharing the contents you could access across a
network. You did not originally refer to what you could see on ios as
a visible file system, you mistakenly assumed you had full access.
Various posters including myself responded to that thread and told
you it was only the visible file system you were viewing.

You essentially wanted to connect an android, or apple phone to your
existing network and they'd be treated as if they were another pc on
the network. Able to exchange files/folder contents both directions.
Or have I misunderstood you? Although you didn't mention any printing
capability requirements, that's possible as well, but it's very
hardware specific and not what I'd consider to be dependable, so I'm
reasonably certain you won't give that aspect a passing grade.

Going by what I thought it was you wanted (the above), I told you I
had several viable solutions (all working, all tested by yours
truely, infact - but I can't claim any originality here on these;
it's old hat stuff to me, and I know I learned it someplace along the
way) to your problem, but I wasn't just going to give them to you. I
also explained why I was doing you that way. Which was, and still is:

Due to your previous hostilities towards me in your universal file
sliding tutorial thread I wasn't going to cough them up (share them
with you) until you apologized for the things you'd written.

At no time during any point in that thread did anyone, aside from you
who as far as I know still hasn't figured out a solution to the
problem as you originally described, question what I wrote to you, or
question ANYTHING I wrote on the subject. Infact, nobody else
questioned me concerning your so called universal (that isn't) file
sliding tutorial, either. Nobody else claimed that I was bull****ting
you, Arlen.

Not a single person, aside from you. And you were only making that
claim because you were trying to get me to fork over what you wanted
to know, under the silly child like guise of 'proving you wrong'. Had
I done so, you would have gained something useful, and I would have
gained nothing for my time. If anything, I would have (and should)
lost respect from you (Which has no value to me, so that would
actually have been okay) and some of my peers had I caved in to your
childlike demands to prove it or I was lying.

I wasn't lying about it then or now, but I'm not going to give it up
to prove anything to you. I'll share it with you freely, as soon as
you do what you should have done, sometime ago. I offered you the
same deal then, too, Arlen.

If I was writing **** and willing to risk my credibility by bluffing
you, why in the **** would I do so again? You could always surprise
me, do the right thing and leave me no choice but to fork over the
information you want, without a fight. For that matter, there was no
real time limit on how long you had, so you could have straighted
this out months ago, gotten what you wanted from me, and have been
sharing files and entire folders across your network as you like.

Since that discussion Arlen, due to something I was doing here at the
shop and at home, I had a reason for trying a different way to
exchange information between my phone and network. This particular
method is not mounting things and making them available as shares
with permissions per share, etc, though.

Instead, it simply allows me to browse visible folders/files on my
existing network and upload files and/or folders to my network from
internal ram, and/or my external 32gigSD (it's small, but plenty for
what I use my phone for) or download files from those visible folders
to my phones internal memory and/or external sdcard. It's actually
quite handy and I'm finding it used more often than the primary
method I use for sharing across the network, as you'd so much like to
learn how to do.

Even you at one point conceeded (without admitting so in public) that
you were partially incorrect, and you began making alterations by
claiming recent linux distro's and windows XP and below didn't count,
anymore - If i'm not mistaken you used the reason that since they
weren't officially supported anymore, they weren't even considered in
your idea of universal windows support. You actually meant, more
modern editions. Or, am I remembering the excuse you provided
incorrectly? Either way, the tutorial isn't as universal as you
originally thought, and I still say, as did others, that your
tutorial serves no real useful purpose. it's common knowledge that
you can use a usb connection to transfer things between your phone
and your computer, regardless of OS (with some exceptions only due to
software support). People do it with phones, usb memory sticks, etc
all the time without even thinking about it.

At no time did I mislead you, or anyone else concerning what I
can/cannot help you or someone else wanting to do the same thing
with. I believe several other posters on various threads discussing
this very subject also have working solutions and most likely know
exactly how I'm doing it, and what I was going to tell you to do to
make it work for you as well. It's not rocket science. It's not even
advanced networking as far as I'm concerned.

I was one of the people who informed you that your tutorial only
works with the linux distributions that have a particular set of 3rd
party installations, contrary to what you're claiming above at this
point, YOU DID NOT know anything about *any* of the other toolkits
that came up during those discussions until myself or another poster
spilled the beans. Infact, Pooh provided you a considerable amount of
information concerning a set of them. And didn't try to claim I was
writing bull**** when I told you that without a specific 3rd party
toolkit (it includes a driver too) your universal file slide wasn't
supported on that distro by default. I assure you, if pooh sees an
opportunity to take a shot at me, he's not going to waste it.

Here's an example although he turned out being wrong, but true to
what I just wrote, he did initially think I was talking ****, and
called me out on what he thought I was doing. So, no, I'm not
bull****ting you about being called out if I **** up, or if others
think I have. Arlen. Detractors (Pooh) will do it without a second
thought, and rightfully so. I have no problem with this, so long as
they are accurate and I'm really incorrect/misinformed, ****ing wrong
about something.

Paul also initially thought I was writing bull****, going so far as
to call me a dumbass for even suggesting what I did in my replies to
you. They were both making assumptions without verification
concerning what I wrote, and as a result, turned out being wrong, the
information I shared concerning repair options you have is correct,
Arlen.

Here's poohs correction...And, you've observed some of the history
between Pooh and myself, they didn't do this for my benefit; although
it does benefit me by backing up what I've already written concerning
repair options. If you question the checklist order I also provided,
you are welcome to fact check me yourself with your choice of search
engine. I didn't share anything secret on that. It's a standard
checklist methodology for troubleshooting, and isn't just specific to
electronics.

Message-ID:
http://al.howardknight.net/msgid.cgi?ID=156522647300

On Wed, 07 Aug 2019 09:28:45 +0100, "p-0''0-h the cat (coder)"
wrote:

Have you completely lost your mind?

We are talking about an *SD* card.

This is what is inside.

https://www.youtube.com/watch?v=dmm790fXUyI

Ah! I take that back. Some do seem to have tiny surface mount
components and chip pins which look worth a reflow.

*** end paste of poohs update to himself.

****
He tried a bunch of physical tricks (e.g., clean contacts, tape over
notch, write tab flipping back & forth, etc.) where this question is
abouttroubleshooting the card itself.
****

I don't know what you mean by all the physical tricks. I've already
seen two of the three you mentioned wouldn't have helped your friend
with the issue in any way shape or form. Only one of the three you
wrote they tried may have been helpful if the contacts were dirty or
oily in some manner and not making a good connection because of that,
specifically.

I've never been one to claim a good contact cleaning is ever a bad
thing, even if it doesn't resolve the issue itself. Never hurts,
anyhow. A clean connection is a good connection. And a good
connection makes happy electrons. -- that last part is a tongue in
cheek bit of humour, Arlen. Not to be taken literally, ok?

It's one thing to screw up something you own and don't really care
about, it's another if you butcher someone elses gear. They probably
do care.

You then lost more credibility claiming comletely wrong
information about connecting Android and Windows via ftp & mtp,
etc., and then claiming you had a "secret" mechanism to tie the
tools together, which, as with all bull****ters on Usenet (like
nospam for example, and Frank Slootweg), never materializes.

I lost nothing of the sort. You can connect Android atleast (I don't
see why you couldn't do the same with an Apple) via ftp, if that's
the route you want to take. You still haven't figured that out,
either then? I told you that you were going about it the wrong way.
You don't want the phone to be the ftp server, you want the computer
to run an ftp server and let the phone run a client. That's still a
semi pain in the ass way of exchanging files between them, though
Arlen. And there's no secret method about that, and I never claimed
it was a secret either. Nice try, though. You are again putting words
in my mouth.

As far as the mtp tools Pooh suggested, I told you they wouldn't work
for what I felt I understood you were looking to do. That being, have
your Android or Apple phone treated like another computer on your
existing network when connected to it, able to share folders and
files as you would with another pc. Both directions, as you liked. To
Poohs credit, he's not as far as I know, a cell phone techie, and
probably didn't fully understand (I'm not sure I do anymore, you keep
asking how to do this or that in a different manner) what it is you
were trying to do.

So again, you're putting words in my mouth. While I do believe that
nospam is a bit of a troll, I can't cite a single instance where they
have intentionally spread material they know to be untrue or
otherwise inaccurate, ie, bull****. The toasting by me they received
over what Malwarebytes is or isn't, wasn't a case of them writing
bull**** - as that would have been an intentional act on their part,
they honestly do not have much knowledge concerning malware, and did
what millions of people do every single day, took the claims by the
manufacturer as an accurate representation of the product. As well as
the manufacturers terminology definitions, which were originally
practically copied word for word from one pulled from a microsoft
url, before they were revised, multiple times. [g]

I haven't seen or known Frank to be bull****ting about anything
they've written about, either Arlen. It's entirely possible that they
have indeed been bull****ters, and I've simply missed seeing those
posts (**** happens, it's usenet); so if you have an MID or two you
can share showing their bull****tery, I'll be more than happy to
review the contents and if they are accurate as you claimed, I'll
state as much and eat crow for having written otherwise. Fair enough?

I haven't provided you any useful information on any of the things
you've asked about because of the way in which you and I interacted
on your universal file sliding thread tutorial. I've been blunt about
this and repeatedly told you this, time and time again. I've given
you ample opportunities to apologize for your snide remarks and lack
of respect and if you did, I'd provide you instructions, step by step
for each and every single method I know to do what you're wanting to
do. You never chose to do so, despite being asked (which I shouldn't
have had to do in the first place) multiple times. As a result, I
denied your request and I'll continue to deny it.

Due to your ****ty attitude, that you opted to continue with, instead
of leaving at the door is why you won't learn how to treat those
devices as you can another ordinary computer on your network once
they are connected to it, unless someone else shows you how, or you
figure it out on your own.

I've gotten to the point that you're just funny, Diesel, since
your credibility, and that of nospam and Frank Slootweg and Snit
and quite a few others, is worse than the results of a simple coin
toss.

Oh for ****s sake, you and you alone think that, and what's worse,
you actually think your opinion matters to, well, uhh, just about
anyone? I'm not even sure Paul would give a rats ass if they had any
idea of your past posts.

You're all utterly worthless in terms of sharing added value on
Usenet.

Is that so? Well, my sd cards are in working order, and I can fix
them if they do fail, in most cases. I didn't have to throw any of
mine in the trash and basically, light that money and watch it burn,
as your friend has done.

You know what's really funny though Arlen? I felt sympathetic towards
your friend, and was about to offer to send you a mailing address and
pay for the shipping with insurance both ways out of pocket, fix it
right here at the shop, the right way, at no charge to your friend or
yourself.

It would have been enough for me to have you know each and every
single time your friend made use of the card that someone you smarted
off to, that you've called a useless idiot or words to that effect
many many times now, fixed that card for your friend, when nobody
else had enough knowledge to even make an effort at it, until I went
ahead and provided more details. You know what, that's not just haha
funny, that's holy ****, I'm going to **** myself if I don't stop
laughing funny. Thanks!

Be sure you don't tell your friend that your online ****ty as hell
attitude towards someone you don't even know cost them an attempt at
fixing that card and fully retrieving it's data at no cost whatsoever
to them, by someone who actually does have required knowledge,
previous experience, replacement components, and all of the gear
necessary to perform the work. Yep, I'm dead serious about the offer
I was going to make as well as my expressed knowledge and previous
repair history with them, Arlen.

I was going to toss in a few of my business cards in the return
package though, in the event they'd like to speak directly with me,
instead of having your useless ass acting as a go between in the
future; should they have any more work like that, they'd be willing
to pay for. First one would have been a freebie to demonstrate I can
do it, and to rub your nose in it. [g]

I wouldn't want any of my friends to know I just ****ed them over
like that, I doubt yours would want to know what kind of friend you
actually are. But maybe they don't care, you did say they tossed it
in the trash, right? Is that because you told them it was ****ed, or
they just assumed it was before you could get back to them? If the
former, you lied to them. Intentionally. I'd already posted that I
could help, but I wanted something from you in return. So yea, you
****ed them over already if they tossed it in the trash based on your
advice. Especially considering that I withdrew my 'demand' and
provided you the information I was going to share, had you met it,
anyway.

--
Momomoto, Famous Japanese, can swallow his nose.

On Thu, 8 Aug 2019 04:10:34 -0000 (UTC), Diesel wrote:

"p-0''0-h the cat (coder)"
Wed, 07 Aug 2019
09:28:34 GMT in alt.comp.freeware, wrote:

On Wed, 07 Aug 2019 09:28:45 +0100, "p-0''0-h the cat (coder)"
wrote:

Have you completely lost your mind?

We are talking about an *SD* card.

This is what is inside.

https://www.youtube.com/watch?v=dmm790fXUyI

Ah! I take that back. Some do seem to have tiny surface mount
components and chip pins which look worth a reflow.

[g]

As for your previous post, Didn't I already tell you about this kewl
as ****ing hell solder alloy? I've been using the SRA FAST CHIP
clone.

It's also known as QuikChip. Good stuff.

I think you mean ChipQuik. I did check it out. It looks good but I get
by with kapton tape and a hot air gun or soldering iron. I don't repair
electronics for a living but I do repair the occasional expensive or
difficult to replace item if I can, or if something just plain interests
me. Anything else hits the bin. The SD cards I use cost less than a
tenner and I've never had one fail but then again they are mounted
physically once on a mobo and put in a box usually for life. There they
remain mounted read only except for very short periods when the firmware
is updated or a new config written.

When I used CF cards I would guess the failure rate was 1 in a thousand.
So the lesson is don't plug and unplug cards, keep them safe in an
enclosure, and don't write to them, that way they will last at least a
decade. Ha.

I did have a microSD card fail in my GPS recently. It was under warranty
but they didn't want it returned so it's in my 'investigate' at some
later date box. Sounds like a project for Christmas now my interest has
been awakened.


I've made the money I spent on a 4.5ft worth of small rods in a tube
many times over, fixing broken SD cards. [g]

I won't claim to have fixed them all, in some cases, the chips
themselves are fuxored and I couldn't recover them. But, the majority
of the time, it wasn't the chips themselves, but the supporting
circuitry either damaged or bad connections. Both of those are quite
fixable - in my case, I have the necessary tools and equipment; I
suspect you do as well.

I repaired a car key fob with tiny components recently when I was quoted
£300 for the fix to take the pain away. *******s. These too will work
for a decade if you put them in a box and never use them.



Oh, and thanks for correcting yourself, even if you didn't want to do
me any favors. This is one case where I can't rub your nose in any
pile of ****.

Sent from my iFurryUnderbelly.

--
p-0.0-h the cat

Internet Terrorist, Mass sock puppeteer, Agent provocateur, Gutter rat,
Devil incarnate, Linux user#666, ******* hacker, Resident evil, Monkey Boy,
Certifiable criminal, Spineless cowardly scum, textbook Psychopath,
the SCOURGE, l33t p00h d3 tr0ll, p00h == lam3r, p00h == tr0ll, troll infâme,
the OVERCAT [The BEARPAIR are dead, and we are its murderers], lowlife troll,
shyster [pending approval by STATE_TERROR], cripple, sociopath, kook,
smug prick, smartarse, arsehole, moron, idiot, imbecile, snittish scumbag,
liar, total ******* retard, shill, pooh-seur, scouringerer, jumped up chav,
punk ass dole whore troll, no nothing innumerate religious maniac,
lycanthropic schizotypal lesbian, the most complete ignoid, joker, and furball.

NewsGroups Numbrer One Terrorist

Honorary SHYSTER and FRAUD awarded for services to Haberdashery.
By Appointment to God Frank-Lin.

Signature integrity check
md5 Checksum: be0b2a8c486d83ce7db9a459b26c4896

I mark any message from »Q« the troll as stinky

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

Diesel wrote:
"Arlen G. Holder"
Thu, 08 Aug 2019 05:56:33 GMT in
alt.comp.freeware, wrote:

On Thu, 8 Aug 2019 04:10:36 -0000 (UTC), Diesel wrote:

Either way, your **** and that of your friends look just fine
from my house. [g]

Hi Diesel,

FACTS.

Great. You claim to only deal in those things, but, I've yet to see
evidence to support that particular claim. Hopefully your reply is
going to impress me by presenting a lot of them. Naturally, since
you're going to present facts (all caps?), they can be independently
verified as being accurate by one or more third parties, including
myself, then...

I'm starting to believe that 'FACTS' is, in truth an acronym. Perhaps
something along the lines of:

Falsehoods Aspiring to Curtail Thoughtful Scrutiny


(cue typical ****ing in the cheerios, etc.)

-----BEGIN PGP SIGNATURE-----

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r4Ml0ENxwGiOSGzsPJxdra6dOBbZJghu/mWvwmBcCYa/xtvlxAY9AqxwUrSdsEL8
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+x4oJzHSabBBt/CzZuhUUOMacZFldA==
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--
|_|O|_|
|_|_|O| Github: https://github.com/dpurgert
|O|O|O| PGP: 05CA 9A50 3F2E 1335 4DC5 4AEE 8E11 DDF3 1279 A281

On Thu, 8 Aug 2019 04:10:34 -0000 (UTC), Diesel wrote:

You're over thinking this and completely ignoring another
possibility, Paul. That being, one or more voltage/current
regulation/filtering components (and not the memory chips) has
failed.

Show me the regulator

Sure.

https://whatis.techtarget.com/definition/resistor

A resistor is an electrical component that limits or regulates the
flow of electrical current in an electronic circuit. Resistors can
also be used to provide a specific voltage for an active device such
as a transistor.

snip

Pooh didn't ask me to show him any regulator, though. I suppose he
knows what a resistor does,

Resistors aren't regulators. They reduce current flow but that only
remains stable if the power to the circuit remains stable. Ohm's law.

Sent from my iFurryUnderbelly.

--
p-0.0-h the cat

Internet Terrorist, Mass sock puppeteer, Agent provocateur, Gutter rat,
Devil incarnate, Linux user#666, ******* hacker, Resident evil, Monkey Boy,
Certifiable criminal, Spineless cowardly scum, textbook Psychopath,
the SCOURGE, l33t p00h d3 tr0ll, p00h == lam3r, p00h == tr0ll, troll infâme,
the OVERCAT [The BEARPAIR are dead, and we are its murderers], lowlife troll,
shyster [pending approval by STATE_TERROR], cripple, sociopath, kook,
smug prick, smartarse, arsehole, moron, idiot, imbecile, snittish scumbag,
liar, total ******* retard, shill, pooh-seur, scouringerer, jumped up chav,
punk ass dole whore troll, no nothing innumerate religious maniac,
lycanthropic schizotypal lesbian, the most complete ignoid, joker, and furball.

NewsGroups Numbrer One Terrorist

Honorary SHYSTER and FRAUD awarded for services to Haberdashery.
By Appointment to God Frank-Lin.

Signature integrity check
md5 Checksum: be0b2a8c486d83ce7db9a459b26c4896

I mark any message from »Q« the troll as stinky

"p-0''0-h the cat (coder)"
Thu, 08 Aug 2019
22:08:25 GMT in alt.comp.freeware, wrote:

On Thu, 8 Aug 2019 04:10:34 -0000 (UTC), Diesel
wrote:

You're over thinking this and completely ignoring another
possibility, Paul. That being, one or more voltage/current
regulation/filtering components (and not the memory chips) has
failed.

Show me the regulator

Sure.

https://whatis.techtarget.com/definition/resistor

A resistor is an electrical component that limits or regulates the
flow of electrical current in an electronic circuit. Resistors can
also be used to provide a specific voltage for an active device
such as a transistor.

snip

Pooh didn't ask me to show him any regulator, though. I suppose he
knows what a resistor does,

Resistors aren't regulators. They reduce current flow but that
only remains stable if the power to the circuit remains stable.
Ohm's law.

I'm not going to play along this time, Pooh. Sorry. It's too much
like the inline vs series debate you tried to derail another
conversation with. I left the definition when I responded to Paul for
a reason. You may argue with the definition, if you'd like. I'm not
going to waste the time.



--
IBM: I've Been Misled

On Fri, 9 Aug 2019 19:43:08 -0000 (UTC), Diesel wrote:

"p-0''0-h the cat (coder)"
Thu, 08 Aug 2019
22:08:25 GMT in alt.comp.freeware, wrote:

On Thu, 8 Aug 2019 04:10:34 -0000 (UTC), Diesel
wrote:

You're over thinking this and completely ignoring another
possibility, Paul. That being, one or more voltage/current
regulation/filtering components (and not the memory chips) has
failed.

Show me the regulator

Sure.

https://whatis.techtarget.com/definition/resistor

A resistor is an electrical component that limits or regulates the
flow of electrical current in an electronic circuit. Resistors can
also be used to provide a specific voltage for an active device
such as a transistor.

snip

Pooh didn't ask me to show him any regulator, though. I suppose he
knows what a resistor does,

Resistors aren't regulators. They reduce current flow but that
only remains stable if the power to the circuit remains stable.
Ohm's law.

I'm not going to play along this time, Pooh.

I've left you no room to manoeuvre. I realised that just after I clicked
'Send'.

Sorry.

My mistake. I went for the quick kill. I failed to win the crowd first.
Ha.

It's too much like the inline vs series debate you tried to derail another
conversation with.

Not at all. The inline vs series debate was about electronic vs
electrical terminology, this is quite obviously about component
function.

I left the definition when I responded to Paul for a reason.

Really. Enlighten me. It looked to me like you were just being sloppy
and you let Paul pull your plonker.

You may argue with the definition, if you'd like. I'm not
going to waste the time.

I don't think there is much to argue about.

Sent from my iFurryUnderbelly.

--
p-0.0-h the cat

Internet Terrorist, Mass sock puppeteer, Agent provocateur, Gutter rat,
Devil incarnate, Linux user#666, ******* hacker, Resident evil, Monkey Boy,
Certifiable criminal, Spineless cowardly scum, textbook Psychopath,
the SCOURGE, l33t p00h d3 tr0ll, p00h == lam3r, p00h == tr0ll, troll infâme,
the OVERCAT [The BEARPAIR are dead, and we are its murderers], lowlife troll,
shyster [pending approval by STATE_TERROR], cripple, sociopath, kook,
smug prick, smartarse, arsehole, moron, idiot, imbecile, snittish scumbag,
liar, total ******* retard, shill, pooh-seur, scouringerer, jumped up chav,
punk ass dole whore troll, no nothing innumerate religious maniac,
lycanthropic schizotypal lesbian, the most complete ignoid, joker, and furball.

NewsGroups Numbrer One Terrorist

Honorary SHYSTER and FRAUD awarded for services to Haberdashery.
By Appointment to God Frank-Lin.

Signature integrity check
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I mark any message from »Q« the troll as stinky

Diesel wrote:
"p-0''0-h the cat (coder)"
Thu, 08 Aug 2019
22:08:25 GMT in alt.comp.freeware, wrote:

On Thu, 8 Aug 2019 04:10:34 -0000 (UTC), Diesel
wrote:

You're over thinking this and completely ignoring another
possibility, Paul. That being, one or more voltage/current
regulation/filtering components (and not the memory chips) has
failed.
Show me the regulator
Sure.

https://whatis.techtarget.com/definition/resistor

A resistor is an electrical component that limits or regulates the
flow of electrical current in an electronic circuit. Resistors can
also be used to provide a specific voltage for an active device
such as a transistor.
snip

Pooh didn't ask me to show him any regulator, though. I suppose he
knows what a resistor does,
Resistors aren't regulators. They reduce current flow but that
only remains stable if the power to the circuit remains stable.
Ohm's law.

I'm not going to play along this time, Pooh. Sorry. It's too much
like the inline vs series debate you tried to derail another
conversation with. I left the definition when I responded to Paul for
a reason. You may argue with the definition, if you'd like. I'm not
going to waste the time.

1) Show me your proposed "circuit".
2) Calculate the "line regulation" of the circuit.
Show your work.
3) Calculate the "load regulation" of the circuit.
Show your work.

How well did the proposed circuit work ?

Will you be using this proposed circuit in real circuit design ?

Why ?

Provide commentary on what the rest of the
circuit (the chips), need to work properly,
and what degree of regulation would be
appropriate.

Oh, and show your work.

There's no integrals or differentiation, just
+-*/ (four functions) is involved and easy to type up.

*******

Let's try one, purely as a thought experiment.

+5V ---- 100 ohms ----- chip
|
Ground

The chip draws anywhere from 1mA to 20mA.

Vchip = Vsupply - (R * Ichip)

At 1mA, the voltage at the chip is 5V - (100*0.001) = 4.9V
At 20mA, the voltage at the chip is 5V - (100*0.020) = 3.0V

The chip requires anywhere from 4.75V to 5.25V to work.
What happens when the chip supply voltage hits 3.0V ???
Oooh, it's now out of spec.

Now, draw another circuit using resistors.
Shirely some combination of series/parallel resistorw will work.
Work out the Thevenin equivalent.
Use the equation again.
Damn, works like ****.

Rinse and repeat.

A resistor regulates **** all.

Now, pop open a textbook about power supply
design. How many *active* devices did you see
in the book. Hint: An *active* device is not
a resistor. A resistor is a passive.

Paul

On Thu, 08 Aug 2019 23:08:25 +0100, p-0''0-h the cat (coder) wrote:

On Thu, 8 Aug 2019 04:10:34 -0000 (UTC), Diesel wrote:

You're over thinking this and completely ignoring another
possibility, Paul. That being, one or more voltage/current
regulation/filtering components (and not the memory chips) has
failed.

Show me the regulator

Sure.

https://whatis.techtarget.com/definition/resistor

A resistor is an electrical component that limits or regulates the
flow of electrical current in an electronic circuit. Resistors can
also be used to provide a specific voltage for an active device such
as a transistor.

snip

Pooh didn't ask me to show him any regulator, though. I suppose he
knows what a resistor does,

Resistors aren't regulators. They reduce current flow but that only
remains stable if the power to the circuit remains stable. Ohm's law.

Sent from my iFurryUnderbelly.

That depends on your meaning of "regulator". If you are
thinking about a solid-state device then no, a resistor is
not a regulator. If you are thinking of any device that
can limit current then yes, a resistor is a regulator. In
fact that is its primary function.

In a circuit that draws a constant current, a simple voltage
regulator (divider) can be made with two resistors in series
connected between the voltage source and ground. The load is
connected to the point between the resistors. The values
(resistance and wattage) of the resistors would depend on the
current.

Also, a single resistor could be used in series with the load
but it would be more sensitive to slight current variations.
The two resistor circuit is more stable.

--
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