Computer Hope
Hardware => Hardware => Topic started by: hnbmilk on June 27, 2009, 12:03:07 AM
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Hello I recently upgraded my system with a new motherboard and processor. I also reformatted my hard drive and installed a fresh copy of Windows XP. I installed all the motherboard drivers (including sound drivers) and everything seems to work great except the sound. Strangely, when i put on my headphones I can only hear sound coming from the right headphone speaker. I thought this could be a headphone issue, but when i tested the same pair of headphones on another device they worked fine. Also i plugged speakers into the computer and they also only play audio from the right. I checked my audio properties and settings and all the balancing settings seem to be fine. I'm using onboard sound (because it seems to be better than my previous sound card), and the drivers came with a "VIA HD Audio Deck". I can't find any balancing options there so i don't see how i could have muted the left... I've tried reinstalling the drivers, that did nothing. I have two audio inputs on my PC, both produce the same result with multiple audio devices. Also, when the headphones are inserted halfway, the sound seems to work perfectly. I would just keep them halfway inserted all the time, but the problem is really bugging me. Any ideas?
The motherboard I'm using is a ASRock A790GXH with onboard audio.
Thank you very much!
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Also, when the headphones are inserted halfway,
NEVER do that, the 1/8" mini jacks do not secure themselves in that position and could transfer static to the mother board or other circuits.
Take the sound card out and exchange it, it's defective.
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I'm using onboard sound (because it seems to be better than my previous sound card)
Could it be something wrong with the jack built into the motherboard?
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I missed the part about it being integrated... ...I must be getting tired.
There's definately something wrong with it, I would suggest returning the mother board for a replacement then.
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I missed the part about it being integrated... ...I must be getting tired.
There's definately something wrong with it, I would suggest returning the mother board for a replacement then.
Yeah, I agree 100%. If it works when it's halfway in, but not all the way, there's a problem with the jack itself. It's a lemon, get your money back (or a replacement board).
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Here is another thought before you run back to get a new Mobo. Look carefully at the connector on the cable from the earphone jack to the Mobo. Be sure there are 3 wires in it and that all 3 are securely snapped into the connector. Sometime one can migrate out of the housing.
Also check to see that all 3 (4) are seated INSIDE the connector. These pins are easily deformed and one may be bent slightly and not inside the connector. There is also the possibility that the connector may be rotated 180 degrees from the correct position on the Mobo header. Some connectors are not physically polarized to prevent mis orientation.
Check all that FIRST, then exchange a part if it still doesn't work.
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Here is another thought before you run back to get a new Mobo. Look carefully at the connector on the cable from the earphone jack to the Mobo. Be sure there are 3 wires in it and that all 3 are securely snapped into the connector. Sometime one can migrate out of the housing.
Also check to see that all 3 (4) are seated INSIDE the connector. These pins are easily deformed and one may be bent slightly and not inside the connector. There is also the possibility that the connector may be rotated 180 degrees from the correct position on the Mobo header. Some connectors are not physically polarized to prevent mis orientation.
Check all that FIRST, then exchange a part if it still doesn't work.
Ok, it's a brand new board. Why should he waste his time fixing an obviously faulty jack when he can get it replaced free of charge? A brand new board should work 100%, not 99%. There's no reason to suggest he attempt to fix a physical flaw himself. He paid for it, he should get a board that works 100%.
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Have you got another set of headphones you can try. It may be the headphones at fault.
Although everything stated seems to point to the motherboard jack itself or some other area pertaining to the audio circuit. Maybe even an electrical issue. Dry solder joints are notorious for poor connection issues.
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Have you got another set of headphones you can try. It may be the headphones at fault.
Although everything stated seems to point to the motherboard jack itself or some other area pertaining to the audio circuit. Maybe even an electrical issue. Dry solder joints are notorious for poor connection issues.
They mentioned they tried speakers as well with the same result.
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Thanks for the replies guys. Yeah its definitely the motherboard then (100% sure nothing is wrong with the speakers or the headphones). Before I go out and get a new motherboard, do you think adding a PCI soundcard would resolve the issue?
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Just because a connector may have been carelessly installed on a MoBo does not mean the board is defective.
Would you replace a table lamp if the plug wasn't seated in the outlet? Why waste time and fuel before checking for a very common problem ? Why take take the time to strip all the parts connected to a mobo for the simple check of an improper connection first?
I have been building, installing and servicing AV equipment for 40 years. We always check for the simplest problems first before tearing into a piece of equipment. 95% of the time, the simplest problem is the cause of the headache.
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Oh, and an additional note. I don't know if this tells anybody anything, but when i mute the left headphone I can hear a click. Same thing happens when i turn my computer on, there is a little bit of static in both ears and then it switches to just the right ear.
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Yes quaxo, thanks, I saw they tried speakers but often times speakers are an outside source for stereo equipment not designed for earpiece quality. They might have had the connection jack backyarded on to the jack. Twist and sticky tape for all I know.
I mean they will suffice for a test just to see if there is a connection and so on, but I would think a headset more qualified, wouldnt you?
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there is a little bit of static in both ears and then it switches to just the right ear
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That seems like a short.
1) Inspect the system if you are comfortable, to see if it's just an interior connection problem.
2) Return the motherboard if under warranty.
3) If expansion slots, and money permit, install a sound card, and disable the onboard video ::) audio. (I are give goodest advice!) (If you do not want to hassle with the warranty return.)
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Thanks for the replies guys. Yeah its definitely the motherboard then (100% sure nothing is wrong with the speakers or the headphones). Before I go out and get a new motherboard, do you think adding a PCI soundcard would resolve the issue?
Probably. If you're going to get a PCI sound card, get something nice, like an Creative X-Fi. Worth the money.
Just because a connector may have been carelessly installed on a MoBo does not mean the board is defective.
...ok... so if it's not defective it's what? Working properly? A carelessly installed integrated part of the motherboard would indicate the item is defective. I never indicated they should tear anything apart. It should be returned to those that 'carelessly installed' that audio jack and be replaced with one that was not 'carelessly installed'.
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OK a little clarity is in order here.
OBVIOUSLY I am not talking about a carelessly soldered connector ON the motherboard. I am referring to a connector on the end of the twisted cable going from the mobo to the headphone jack. One of the pins may have been slightly bent or when the cable connector was placed on the header on the mobo, one of the pins may have been missed and the connector is sitting on 2 of the 3 pins.
The clicking sound is usually not an issue as some manufacturers use inexpensive ICs to toggle audio on or off some eve use DIP relays. (miniature contact enclosed relays)
There evidently is a slight DC component in the audio signal. Audio is an AC signal but less expensive amplifier designs can permit a small DC voltage in the audio. This is the reason for electrolytic capacitors in the output stage of an amplifier of this type. The capacitor passes the AC audio signal but blocks the DC signal.
They MAY be a problem on the mobo but I believe it is a new unit (if memory of the original post serves) so I would look at the obvious first.
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Just because a connector may have been carelessly installed on a MoBo does not mean the board is defective.
I sure as the *censored* wouldn't keep it in my computer. I don't care what your experience is, but if they missed that at QA then who knows how the rest of it is.
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I am not talking about the construction of the mobo assembly.
I am referring to the final computer assembly when the power switch, HDD LED, and headphone/microphone jacks mounted to the chassis are connected to the mobo.
The mobo is QA'd before the final assembly team gets it on the production line. If a computer is assembled on site such as BestBuy etc, there probably for errors is very high. If someone assembles the computer at home from discrete parts, there is a good chance as well something may be missed.
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I am referring to the final computer assembly when the power switch, HDD LED, and headphone/microphone jacks mounted to the chassis are connected to the mobo.
Oh, okay, gotcha, sorry man.
I think I'll go make another pot of coffee :)
You could very well be right, I was thinking the jacks on the back of the box. Your thinking the remotes on the front.
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I added a PCI sound card and everything seems to work fine now.
Thanks a lot for the help guys :)
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OK, but you still didn't find the cause of the original problem. Personally it would bug me if something like that went unsolved but if you have stereo sound and are happy, that's all that matters. Enjoy.
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I added a PCI sound card and everything seems to work fine now.
Thanks a lot for the help guys :)
Ok, good deal. ;D
Just out of curiosity, what card did you get?