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#1
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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 |
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#2
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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
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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
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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
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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
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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
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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. |
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Inspiron 1545 audio problem
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#9
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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
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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
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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
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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
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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 |
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