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Inspiron 1545 audio problem



 
 
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  #1  
Old May 3rd 15, 11:42 AM posted to alt.windows7.general
Ab
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Posts: 7
Default Inspiron 1545 audio problem

My Dell Inspiron 1545 with Win 7 has an audio problem: the slightest
bump often causes the audio to mute completely and the only way I can
get audio back is to reboot. This has been a recurring problem for
quite some time. There are no driver or other warnings when this
occurs, in fact nothing happens except no audio. Any ideas would be
welcome. Watching videos can only be done if I don't make any sudden
movements and/or bump the laptop at all.

Thank you,
Ab
Ads
  #2  
Old May 3rd 15, 12:11 PM posted to alt.windows7.general
Ken[_8_]
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Posts: 166
Default Inspiron 1545 audio problem

Ab wrote:
My Dell Inspiron 1545 with Win 7 has an audio problem: the slightest
bump often causes the audio to mute completely and the only way I can
get audio back is to reboot. This has been a recurring problem for
quite some time. There are no driver or other warnings when this
occurs, in fact nothing happens except no audio. Any ideas would be
welcome. Watching videos can only be done if I don't make any sudden
movements and/or bump the laptop at all.

Thank you,
Ab

I don't know what it could be, but I would run a diagnostic for RAM and
the Hard Drive. It sounds like something is being lost from memory when
the bump occurs.
  #3  
Old May 3rd 15, 12:13 PM posted to alt.windows7.general
Ed Cryer
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Posts: 2,621
Default Inspiron 1545 audio problem

Ab wrote:
My Dell Inspiron 1545 with Win 7 has an audio problem: the slightest
bump often causes the audio to mute completely and the only way I can
get audio back is to reboot. This has been a recurring problem for
quite some time. There are no driver or other warnings when this
occurs, in fact nothing happens except no audio. Any ideas would be
welcome. Watching videos can only be done if I don't make any sudden
movements and/or bump the laptop at all.

Thank you,
Ab


If that's all that goes wrong after a bump, well, you don't need me to
state the obvious.
Which is {muted voice} some loose connection.

Do you use external speakers, or the laptop ones?

Ed

  #4  
Old May 3rd 15, 12:20 PM posted to alt.windows7.general
SC Tom[_3_]
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Posts: 4,089
Default Inspiron 1545 audio problem



"Ab" wrote in message ...
My Dell Inspiron 1545 with Win 7 has an audio problem: the slightest bump
often causes the audio to mute completely and the only way I can get audio
back is to reboot. This has been a recurring problem for quite some time.
There are no driver or other warnings when this occurs, in fact nothing
happens except no audio. Any ideas would be welcome. Watching videos can
only be done if I don't make any sudden movements and/or bump the laptop
at all.

Thank you,
Ab


Does this happen when using the headphones, too?
--
SC Tom


  #5  
Old May 3rd 15, 12:29 PM posted to alt.windows7.general
Ab
external usenet poster
 
Posts: 7
Default Inspiron 1545 audio problem

On 05/03/2015 07:13 AM, Ed Cryer wrote:
Ab wrote:
My Dell Inspiron 1545 with Win 7 has an audio problem: the slightest
bump often causes the audio to mute completely and the only way I can
get audio back is to reboot. This has been a recurring problem for
quite some time. There are no driver or other warnings when this
occurs, in fact nothing happens except no audio. Any ideas would be
welcome. Watching videos can only be done if I don't make any sudden
movements and/or bump the laptop at all.

Thank you,
Ab


If that's all that goes wrong after a bump, well, you don't need me to
state the obvious.
Which is {muted voice} some loose connection.

Do you use external speakers, or the laptop ones?


I use the laptop internal speakers.


Ed


  #6  
Old May 3rd 15, 12:29 PM posted to alt.windows7.general
Ab
external usenet poster
 
Posts: 7
Default Inspiron 1545 audio problem

On 05/03/2015 07:20 AM, SC Tom wrote:


"Ab" wrote in message
...
My Dell Inspiron 1545 with Win 7 has an audio problem: the slightest
bump often causes the audio to mute completely and the only way I can
get audio back is to reboot. This has been a recurring problem for
quite some time. There are no driver or other warnings when this
occurs, in fact nothing happens except no audio. Any ideas would be
welcome. Watching videos can only be done if I don't make any sudden
movements and/or bump the laptop at all.

Thank you,
Ab


Does this happen when using the headphones, too?


I haven't tried them, but will try the next time it does it.
  #7  
Old May 3rd 15, 06:03 PM posted to alt.windows7.general
Paul in Houston TX[_2_]
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Posts: 999
Default Inspiron 1545 audio problem

Ab wrote:
My Dell Inspiron 1545 with Win 7 has an audio problem: the slightest
bump often causes the audio to mute completely and the only way I can
get audio back is to reboot. This has been a recurring problem for
quite some time. There are no driver or other warnings when this
occurs, in fact nothing happens except no audio. Any ideas would be
welcome. Watching videos can only be done if I don't make any sudden
movements and/or bump the laptop at all.

Thank you,
Ab


If it were mine, I would take it apart and re-seat every wire, part,
cpu, plug, ram, battery, etc. that can be reseated.
  #9  
Old May 4th 15, 01:47 AM posted to alt.windows7.general
Paul
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Posts: 18,275
Default Inspiron 1545 audio problem

Ab wrote:
On 05/03/2015 07:13 AM, Ed Cryer wrote:
Ab wrote:
My Dell Inspiron 1545 with Win 7 has an audio problem: the slightest
bump often causes the audio to mute completely and the only way I can
get audio back is to reboot. This has been a recurring problem for
quite some time. There are no driver or other warnings when this
occurs, in fact nothing happens except no audio. Any ideas would be
welcome. Watching videos can only be done if I don't make any sudden
movements and/or bump the laptop at all.

Thank you,
Ab


If that's all that goes wrong after a bump, well, you don't need me to
state the obvious.
Which is {muted voice} some loose connection.

Do you use external speakers, or the laptop ones?


I use the laptop internal speakers. ---


Bingo!

Now we know where the fault is.

+12V ----- 7805 reg ---+ Power source
| |
AC'97 or 2W class
HDAudio Codec ------ Stereo Amp ---- Internal Speakers
| |
--- GND --- GND
- -

The 7805 regulator is used to give "clean" power to the
hardware CODEC. So if the 7805 shuts down on overheat,
the driver notices no responses coming from the chip,
and you'd get a yellow mark in Device manager.

Since Device Manager or Drivers are not complaining
that the sound has disappeared, that means the
amplifier chip has a failure. The amplifier could
cut out, if it overheats. The amplifier could cut
out if the power source is cut (broken track).
Since both speakers cut out at once, it's not a speaker wire.
The amplifier may also have a "mute" or "disable" pin
driven by a GPIO. Which would have no particularly
good feedback.

So a fault has happened, on something the computer
does not monitor. And there is typically no way to
monitor a speaker.

Since the problem does not resolve with time,
then it probably isn't overheat. That leaves
verifying the power source (could be coming
straight from the battery - want as much voltage
as possible to run the amp chip). So now we're
left with an enable/disable pin as a possible
culprit.

Note that there have been motherboards shipped,
where chips near the edge of the motherboard
don't "get coated with solder properly" (I use
that term, so I won't have to give a lecture on
soldering). Another posted noted this on a motherboard
years ago, which he remedied with a soldering iron.
But that doesn't happen too often.

Paul

  #10  
Old May 4th 15, 02:56 AM posted to alt.windows7.general
Buffalo[_3_]
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Posts: 686
Default Inspiron 1545 audio problem

"Ab" wrote in message ...

My Dell Inspiron 1545 with Win 7 has an audio problem: the slightest bump
often causes the audio to mute completely and the only way I can get audio
back is to reboot. This has been a recurring problem for quite some time.
There are no driver or other warnings when this occurs, in fact nothing
happens except no audio. Any ideas would be welcome. Watching videos can
only be done if I don't make any sudden movements and/or bump the laptop at
all.

Thank you,
Ab

First dl the drivers for you audio. Next, uninstall the whole audio device
from your system.
Reboot and when 7 finds the device, install the drivers.
May or may not work in Win7, but it sure did with XP on a 1550 Dell
Inspiron, which lost its sound.
--
Buffalo

  #11  
Old May 4th 15, 09:15 AM posted to alt.windows7.general
VanguardLH[_2_]
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Posts: 10,881
Default Inspiron 1545 audio problem

Paul wrote:


+12V ----- 7805 reg ---+ Power source
| |
AC'97 or 2W class
HDAudio Codec ------ Stereo Amp ---- Internal Speakers
| |
--- GND --- GND
- -


But wouldn't your diagram be altered by the addition of an external jack
to connect powered speakers? If the jack was shorting because of
vibration (so the internal speakers get cut off), perhaps more shaking
on a reboot (hard disk head bouncing) might shake out the short. I'd
get a pair of headphones and plug into the external jack to see if they
suddenly cut out on a "bump", too.
  #12  
Old May 4th 15, 09:16 AM posted to alt.windows7.general
VanguardLH[_2_]
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Posts: 10,881
Default Inspiron 1545 audio problem

Ab wrote:

SC Tom wrote:

Ab wrote ...

My Dell Inspiron 1545 with Win 7 has an audio problem: the slightest
bump often causes the audio to mute completely and the only way I can
get audio back is to reboot. This has been a recurring problem for
quite some time.


Does this happen when using the headphones, too?


I haven't tried them, but will try the next time it does it.


Then the effect has already happened while still using the internal
speakers. You can't plug in headphones and do another "bump" a few
times to check? Just how hard is this "bump"?
  #13  
Old May 4th 15, 06:38 PM posted to alt.windows7.general
Buffalo[_3_]
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Posts: 686
Default Inspiron 1545 audio problem

"VanguardLH" wrote in message ...

Paul wrote:


+12V ----- 7805 reg ---+ Power source
| |
AC'97 or 2W class
HDAudio Codec ------ Stereo Amp ---- Internal
Speakers
| |
--- GND --- GND
- -


But wouldn't your diagram be altered by the addition of an external jack
to connect powered speakers? If the jack was shorting because of
vibration (so the internal speakers get cut off), perhaps more shaking
on a reboot (hard disk head bouncing) might shake out the short. I'd
get a pair of headphones and plug into the external jack to see if they
suddenly cut out on a "bump", too.


I think plugging in headphones is a worthwhile test, also.
--
Buffalo

  #14  
Old May 4th 15, 08:44 PM posted to alt.windows7.general
Paul
external usenet poster
 
Posts: 18,275
Default Inspiron 1545 audio problem

Stormin' Norman wrote:
On Sun, 3 May 2015 16:23:40 -0300, pjp wrote:

In article , s says...
Ab wrote:
My Dell Inspiron 1545 with Win 7 has an audio problem: the slightest
bump often causes the audio to mute completely and the only way I can
get audio back is to reboot. This has been a recurring problem for
quite some time. There are no driver or other warnings when this
occurs, in fact nothing happens except no audio. Any ideas would be
welcome. Watching videos can only be done if I don't make any sudden
movements and/or bump the laptop at all.

Thank you,
Ab
If it were mine, I would take it apart and re-seat every wire, part,
cpu, plug, ram, battery, etc. that can be reseated.

I HATE trying to take laptops apart and I've been at playing with pc
hardware since 1984. Only if desparate do I try, just too easy to screw
something up past my ability to fix it. I'm a very ugly man with a
soldering gun LOL.


Learning to properly de-solder components on modern PCBs is the REAL challenge.
You have not known hell until you try and dismantle an iPhone 5, repair a cold
solder connection, reassemble the *******, have it actually work and do so
without leaving it marred.


I'm shocked. An Apple product with a cold solder joint ?
What is this world coming to ?

Paul
 




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