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No sound from the amps outputs

I have a Onkyo TH-SR502 amp which was working fine until suddenly no sound were coming from any of the output connectors (including the phono jack). I got it checked by a audio repair specialist and he informed me that the DSPB (Digital Sound Processor board?) has busted. The code printed on this board is MCDG-8230/CMKM-P3X.

Is this diagnosis correct? Or is there any known solutions that you know of that I can tell my repairmen to try.

In case the solutions is to replace this board, can you tell me how/where i can get one of these please.

Thanks in advance.

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Re: No sound from the amps outputs

Before doing anything drastic I would suggest a visual inspection for cold / open solder joins around the knob and surrounding components. I would also try to clean the knob with some switch or contact cleaner.

If it passes all above and still have the problem I would replace the volume control.

But if jiggle clears it then its definitely a bad connection somewhere or a bad / dirty volume control

Posted on May 18, 2008

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Re: No sound from the amps outputs

Field inspection is more accurate than on line and it depends on the personal of the service spechialist.and from here i can not make fair judgement.

Posted on Mar 15, 2008

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