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Author Topic: Sound only comes out of 1 speaker...  (Read 2117 times)

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UsuL

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Sound only comes out of 1 speaker...
« on: 03-September-03, 09:13:19 »

what can i say...subject says its all.. ive got a MSI GNB Max FISR (MS-6565) board and the on board sound card only produces sound through 1 speaker of my system (worked perfectly on previous sys..) Specs: 1.7 P4...1 Gig Ram...wierd thing is that when i pull jack OUT approx 1 cm (jack is STILL IN...BUT NOT ALL THE WAY OUT...yeah confusing) the sound comes out in BOTH speakers but at much REDUCED volume...works same with sound sys and headphones...i have tried the software which recommends 2 versus 4 versus 6 speaker...same result..any ideas?
thanks in advance  :D
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Petej61

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« Reply #1 on: 03-September-03, 11:51:59 »

It could be that you have a motherboard standoff post (what your motherboard is fixed to the case by) in the wrong position - this can shortout traces or pins on the motherboard

Remove the motherboard and check all the posts line up with screw holes in the board - if not reposition/remove them (usualy by unscrewing or bending out of brackets in the case)
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MRSAVYINQUIRY

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« Reply #2 on: 11-April-04, 04:49:17 »

If one of the screws of the motherboard is not mounted to the case, would that cause one of the speakers not to play?
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zeizelbird

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« Reply #3 on: 11-April-04, 08:32:39 »

It obviously depends on which screw it is, and the design of the board, but it's entirely possible.  The case is used for what's called Chassis Ground, which is generally considered 'universal zero' as far as the circuit design is concerned.  Since screws are typically used to connect the circuit ground to chassis ground, missing a screw where one is expected could cause a 'floating' ground (iow - not really ground).

Granted, most boards are designed with a ground plane, which would make a single screw unnecessary, but it's entirely possible that an on-board sound processor would be designed with a seperate ground plane.  Using the main ground plane might introduce too much electrical noise for the sound processor to cope with, which could significantly reduce sound quality.

So yes, a single missing screw could very possibly mess up ground for your sound processor, and an imperfect ground means a very screwy system (pun intended).


BTW - If you were asking about Petej61's suggestion, I think he's referring to the possibility of a metal standoff on the case shorting out vias on the bottom of the board.
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kandaq

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« Reply #4 on: 11-April-04, 11:59:14 »

I have the same problem with my 865PS. I get stereo sound if i pull the jack out halfway. Maybe you can try the same as well.
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NovJoe

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« Reply #5 on: 11-April-04, 13:39:38 »
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  • Any jumpers being removed for Front Panel Sounds?
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    wsoul2k

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    « Reply #6 on: 14-April-04, 18:17:46 »

    I have the same problem also

    but  if i pull the jack out halfway i dont get stero i just get the same CHANEL on booth speakers




    Quote
    Originally posted by kandaq
    I have the same problem with my 865PS. I get stereo sound if i pull the jack out halfway. Maybe you can try the same as well.
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