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Start Sound - Need Help



 
 
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  #31  
Old January 10th 18, 08:20 AM posted to alt.windows7.general
Diesel
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Default Start Sound - Need Help

news:svd95ddsarkn8g3sim2245b8903426ccg3@
4ax.com Tue, 09 Jan 2018 12:40:37 GMT in alt.windows7.general, wrote:

Posted the sound :

https://instaud.io/1Dd5

Take a listen. Not likely to be one of those bearings.


That's a fan running at high speed for a moment with a bad bearing.

It's either the cpu fan or the power supply fan. And, you'll only
hear that obnoxious noise as long as the fan is running at or close
to full speed.

An easy way to check which one it probably is, without risking any
harm to your system is to power it off and use a small vacuum
cleaner. Put the nose upto the fan and let it do some sucking. It'll
speed the fan up, close to full speed if you get the suction going
right and you'll hear that noise.

Another easy way to check it is to power the machine up with the case
off; if you have good hearing. You'll quickly know if it's the cpu
fan or not. And if it isn't, it'll be the fan on the power supply.
You don't need to changeout the entire power supply in many cases to
swap the fan out, if it's the culprit.




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  #32  
Old January 10th 18, 08:20 AM posted to alt.windows7.general
Diesel
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Posts: 937
Default Start Sound - Need Help

"Mayayana" news32ldu$1u6d$1
@gioia.aioe.org Tue, 09 Jan 2018 15:00:11 GMT in
alt.windows7.general, wrote:

wrote in message
| Posted the sound :
|
| https://instaud.io/1Dd5
|
Nice website. It works.
That's clearly a moving part, probably a fan. I'm
surprised it doesn't last longer.


It's not lasting longer (yet) because you're only hearing it when the
fan is at near or full speed. Eventually though, as the bearing wear
gets worse on the dying fan, you'll begin to hear it on the slower
speeds too; which can result in inefficient cooling. The system will
try to boost fan speed to compensate when this happens. At some point
though, the fan isn't going to be able to continue doing a good job
of passing air over the heatsink fins and will need to be replaced.

If it's an Intel box, it'll most likely reduce performance to keep
from overheating to a point. Worst case scenario, it'll do a hard
shutdown. Your OS may/may not like that depending on what you were
doing when it happens. If it's an AMD, No guarantee you won't cook
the cpu as the cooling systems inability to cool it down gets worse.

Either way, the failing fan should be identified and replaced as soon
as is realistically possible. It's already working harder than
necessary to compensate for the bearing failure in progress, even at
the slower speeds.

Go to Home Depot or Lowes. Buy one of
those big green air filters that's just a
plain gauzy pad and comes with a black plastic
grille. Get some plastic ties. Cut the pad and grille
into pieces to fit the areas of air intake holes.
Place each pad piece inside, cover it with a grille,
and pull through a few ties to keep the grille in
place. It's an easy, cheap way to keep the inside
clean.


While it's a cheap/easy fix for keeping dust/cat fur, etc, out, it's
also reducing airflow coming into the case by a small amount. Which
will cause the fan(s) to run a little faster to compensate. No real
biggie, it's what they are designed to do.


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  #33  
Old January 10th 18, 08:20 AM posted to alt.windows7.general
Diesel
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Posts: 937
Default Start Sound - Need Help

Paul news Jan 2018 12:03:12 GMT in alt.windows7.general, wrote:

wrote:
Trimmed the start and end and now it's only 44 KB.


Didn't you see my post ?

You can upload the damn thing.

https://instaud.io/

If you think you're harvesting email addresses
junior, you can forget it :-/

Paul


Nifty site, thanks Paul.


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  #34  
Old January 10th 18, 08:20 AM posted to alt.windows7.general
Diesel
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Default Start Sound - Need Help

Paul news Jan 2018 13:54:28 GMT in alt.windows7.general, wrote:

wrote:
OK, I'm not harvesting anything !

I guess you can listen here :

https://instaud.io/1Dd5

I chopped the very end off the recording and normalized it.
Just to bring up the level a little bit. Maybe I should
have companded it, and really cranked the level :-)

https://instaud.io/1DdB

CPU fan speed is register controlled. If a Dell computer
crashes, the fan can be heard running like a hoover,
because then there is nothing to turn down the fan speed
after the power is applied.


I've noticed that some Dells specifically will when first powered up
will run the CPU fan at or near full speed. Which seems to be the
case here.

I've got a vostro 410 sitting a couple of desks over that does the
same thing. I can't say it's unique to Dell, but, I don't run across
many other system builds that fire their fans on full on initial hard
start, either.

The result is, when machines like a Dell start up, there
will be a second or two delay during POST where the
CPU fan speed hasn't been set yet. Once the POST
gets to that point, the CPU fan can be properly
adjusted for the amount of thermal present at
that point in time.


Aye. My other systems, which are clones, don't crank their fans to
full speed on startup, but they will/do adjust speed based on need as
the machine heats up.

I'm guessing that's a fan noise, but it could just
as easily be a disk drive (judging by the "OK" sound
it makes nearer the end of the recording). It could be
that the fan stops rumbling on its bearings,
after the voltage applied via PWM is reduced a bit.


Nah, listen closer. That's no HD sound. That's a fan. I know the
sound you're thinking of too, and that's not it.

While you can peel the label back on some fans, and put
oil on the bearing, not all fans actually have an open
bearing. A Panaflo for example, you can't oil it because
the FDB bearing is sealed.


Most likely, this won't be an oil friendly fan.

Ball bearing motors get noisy as they get older. In
fact, a user is likely to replace the fan due to the
noise level, before it ever gets a chance to seize up
or something. I have disk drives with ball bearing
motors, that I can no longer sit next to, as they're
that loud. And the drive still works...


Yes, but, would you trust important data on them? I'd be making sure
I had backups once a drive gets that loud. You know it's the spindle
motor with some age on it, but, as you also most likely know, it
doesn't require a total failure to make your ability to access data
go bye bye.

Replacing the main fan on a Dell can be difficult,
due to the five pin interface. Regular PC fans
come in two, three, or four pin varieties. But
Dell decided five was a nice round number, and the
first question I get is "what can I put in here?".
Well, there was a supplier of replacement hoovers
for Dell, but there's no guarantee they're still
in business.


It's tach2 depending on the pinout spec you read. They are PWM style
fans, vs the older ones that provided tach readout (or none) and let
the mainboard alter incoming voltage to the fan to control it's
speed. In the case of the two pin fans, obviously the mainboard has
no control over the fan and the fan just runs wide open; but you
likely won't see those around much anymore.


With PWM, it's a pulse instead. If it gets a pulse, the fan gets full
power. No pulse, no power. It's a more efficient way to control fan
speed, by the pulses per second you send it vs trying to regulate
voltage to the fan motor. You just keep 12 volts hot, but, the fan
can't use it if the pulse isn't present. And you can control how fast
the fan runs by how often you pulse it.

You can bypass the fifth pin, since you already have another pin
providing tach readout, anyway. What you can't do with those fans is
bypass the pwm signal. If you did, the fan wouldn't ever run.

http://pinoutguide.com/Motherboard/d...n_pinout.shtml

This converts the 5pin to 4pin configuration while keeping fan
control in the hands of your Dells mainboard. Dell likes to be non
standard in various respects and of course, that includes (depending
on Dell model) the pin layout.

Or, if you'd prefer to have a 5pin fan because you think your Dell
might actually use all five pins and you're losing something if you
don't a quick online search will provide them.

If it's working now, you have nothing to worry about :-)
The above is just a backgrounder for you, for the
next time it happens.


I disagree... The fan is showing signs of failure at full speed. At
lower speeds, you don't hear it, but, that doesn't mean the fan is
continuing to operate within spec due to the failing bearing you can
clearly hear at full speed. The fan should be replaced. It's not
something to just ignore and live with. You preferably don't want to
have to replace a fan because it actually went out on you, as by
doing so, you've actually ran your cpu hotter over time than it would
have otherwise been run. Heat causes premature failures on
electronics. You can damage various levels of cache on the cpu by
running hot for too long and you may not even notice right away
you've harmed the cpu, until you open that one app that taxes it,
which used to run just fine, and now bluescreens your machine.

AMD socket 7 chips used to be real bad about this. You could toast
the l2 cache and not notice you had a problem right away. As the
computer would bootup as you'd expect, but, depending on the apps you
tried to open, would bluescreen and crash out on you. You actually
had a cpu level damaged system which wasn't stable, but, the
stability issue wouldn't crop up just by booting windows.



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  #35  
Old January 10th 18, 08:20 AM posted to alt.windows7.general
Diesel
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Posts: 937
Default Start Sound - Need Help


Tue, 09 Jan 2018
16:02:32 GMT in alt.windows7.general, wrote:

Noise comes either : Shut Down - Power On ( or ) Sleep - Wake
Up, BUT only after an over night.

To me, it sounds for all the world, like something briefly coming
alive, then winding down for most of the sound. I think that rules
out fan bearings. System boots and works fine, and it doesn't
sound like a HD, so rule that out.


You most likely have a failing CPU fan. You should replace it as soon
as possible. The reason you think it's okay because you aren't
hearing that noise all the time is because you're only hearing it
when the fan is running at or near full speed. It *does* have a bad
bearing.

Also, the sound now comes every time after an over night, but I
used to hear it once in awhile very infrequently, since new.


Thats a quality Dell for you. ROFL. No, but, seriously, your fan is
dying, replace it.

I think it might be some sort of maintenance function. Could be
coming from the speaker (?); difficult to tell on a fly.


Nope. It's the fan. I've heard that noise so many times doing techie
work I'd be willing to bet money on it.


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  #36  
Old January 10th 18, 12:12 PM posted to alt.windows7.general
No_Name
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Posts: 160
Default Start Sound - Need Help

Thanks Ron C .

It definitely seems to be the CD drive spinning up then down.

It didn't have any boot priority set, so I set it at 2nd after the HD
set at 1st.

Hope this eliminates the sound; we'll see; let you know.

Thanks also to all responders ...
  #37  
Old January 10th 18, 12:12 PM posted to alt.windows7.general
No_Name
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Posts: 160
Default Start Sound - Need Help

Thanks Ron C .

It definitely seems to be the CD drive spinning up then down.

It didn't have any boot priority set, so I set it at 2nd after the HD
set at 1st.

Hope this eliminates the sound; we'll see; let you know.

Thanks also to all responders ...
  #38  
Old January 10th 18, 04:04 PM posted to alt.windows7.general
Ken Blake[_5_]
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Posts: 2,221
Default Start Sound - Need Help

On Tue, 09 Jan 2018 19:18:37 -0500, wrote:


No dick in the drive, but it does sound like that and coming from
there.

I'll put a disk in and see if it changes.



Yes, put a disk in. It's much safer. g
  #42  
Old January 12th 18, 03:12 PM posted to alt.windows7.general
No_Name
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Posts: 160
Default Start Sound - Need Help

Interestingly, someone mentioned, that this might be related to
temperature. Computer room is essentially unheated over night. We're
having a relative heat wave, upper 50sF, so startup temperature was at
least 15F warmer. Guess what ? No sound today !
 




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