When I purchased it, it had Windows 7 and now runs the latest version of Linux. I've tried spamming keys at the BIOS to get the speaker to beep, I ran `beep` in FreeDOS, I've tried using it like normal with PulseAudio/ALSA and I still can't get any audio.
The thing is, the PCI slot is being detected fine and it says its for Intel Audio. `alsamixer` also shows me audio card information so it looks like it should be working?
I thought maybe the old speakers were blown so I bought new ones and nothing has changed. It may sound stupid, but I also took a AA battery to the old speakers and flicked a wire across the terminals and the speakers indeed made a noise so it surely must be the card and not the speakers?
Is there any way to diagnose the problem in hardware and not just software? How do I know for certain that my card is fried? Can I pull the chip off and solder on a new one? Which chip is it on a T400? Where is it? These are all questions that I have in mind...
- Posts: 17112
- Joined: Sun Feb 25, 2007 11:28 am
- Location: Brodheadsville, Pennsylvania, USA
You've pretty much done everything that I would've at this point.
It sounds to me like it is, at least the side that outputs to the speakers.How do I know for certain that my card is fried?
No. You'd need to replace the motherboard.Can I pull the chip off and solder on a new one? Which chip is it on a T400? Where is it?
George (your grouchy retired FlexView farmer)
FlexView AARP club members:A31p, T43pSF
Abused daily: T520, X200s
PMs requesting personal tech support will be ignored.
X61 7673-V2V, T60 2007-QPG, T42 2373-F7G, X32 (IPS Screen), A31p w/ Ultrabay Numpad, A21m 2628-GXU
At least I know I'm not going crazy or doing something wrong. It is a shame, but I may just have to live without sound. Thank you for the response.
Hmm... Sometimes (I'm talking like 1/10 times) when I plug the headphones in, ALSA doesn't switch over from the (dead) speakers to headphone mode, and I have to unplug and replug them. This is probably a configuration issue, but could this also be a symptom of what you are describing?dr_st wrote: ↑Mon Nov 30, 2020 3:48 pmSince the sound through the headphone jack is fine, this suggest that the audio producing portion of the chip is intact. Given that two sets of speakers experienced the same issue, I would say the problem is somewhere in the circuit that detects something being plugged into the headphone jack. It seems to think there is always something there, even if there isn't, and mutes the speakers accordingly.
From my experience I totally agree with you.
My friend came to me a few weeks ago saying his laptop speakers are not working and nor is the mic (because on newer laptops the mic is on the same headphone jack)
And yes sure enough he has the extreme luck of a piece of drying crystal stuck right inside the headphone jack! He's extremely fortunate that headphone jack has holes on the back so I just pushed a tiny screwdriver through the back and it came right out!
600 PII-266 416mb 40gb WXP
T23 PIII 1.13ghz 1gb W7
Precision M4300 X9000 8gb 160gb WUXGA Ultrasharp fp W10
T530i 15.6" i7 16gb fp W10
A30p PIII 1.2 1gb W7 (IDTech)
T43p 2.26 2gb fp W10 (Sharp)
Lat C840 P4-2.5 2gb 60gb W7 (Ultrasharp)
- Posts: 10289
- Joined: Sun Jun 04, 2006 1:26 am
- Location: San Jose, CA 95120 USA
Your description of the audio problem and the steps you have taken so far points to several possibilities: a defective headphone jack or a couple of components associated with it, a bad switching transistor or a short in the docking port. Inside the headphone jack assembly there are 2 "switches" that detect when a plug is inserted. Only one of them is actually used to inform the audio circuitry that headphones are plugged in. This switch controls a transistor which in turn tells the audio IC to mute the speakers. Any one of those components could be bad and that might prevent the speakers from activating.agregate wrote: ↑Mon Nov 30, 2020 4:51 pmHmm... Sometimes (I'm talking like 1/10 times) when I plug the headphones in, ALSA doesn't switch over from the (dead) speakers to headphone mode, and I have to unplug and replug them. This is probably a configuration issue, but could this also be a symptom of what you are describing?
From what I can tell, there is also a connection to the docking port that if shorted to ground, will prevent the speakers from operating. I don't know if that would also affect the laptop in BIOS mode (your thrashing of the keys to get a beep). In any event, this would be the easiest thing to check first. You'll probably have to push the plastic piece that hides the contacts down into the docking port but you should be able to see the gold traces. Make sure that they are all uniform and there's nothing in between adjacent contacts.
The other things that might be a problem will require a disassembly of the system in order to get down to the motherboard. Depending upon where the components are, you might have to actually remove the motherboard from the base. If inspection of the docking port doesn't reveal any problems and you feel comfortable with the teardown, grab a copy of the Hardware Maintenance Manual from the link at the top of the page and start reading.
X22 X24 X31 X41 X41T X60 X60s X61 X61s X200 X200s X300 X301 Z60m Z61t Z61p 560 560Z 600 600E 600X T21 T22 T23 T41 T60p T410 T420 T520 W500 W520 R50 A21p A22p A31 A31p
NOTE: All links to PC-Doctor software hosted by me are dead. Files removed 8/28/12 by manufacturer's demand.
- Freshman Member
- Posts: 86
- Joined: Wed Jun 17, 2009 9:22 pm
- Location: Ukiah, California
My guess would be a dead surface-mount component in the speaker circuit. If that's what it is, it might be fairly easy to track down if you have experience with a multimeter. Start at the speaker connection and work back.
- Similar Topics
- Last post
Who is online
Users browsing this forum: No registered users and 19 guests