No sound

posted by TTM77 on Aug 26, 2006

Moto DCP501
Sound was very low when I first got it. But didn't use it much so didn't care. Now there is no sound at all. I've tried everything from switching A/B input, audio mode, plug in diff speakers, etc.

I even plug in a DMM to check the voltage just for the hel of it. a constant 2.49v on all speakers out while the movie is playing on the internal DVD player. Speakers measured 8 ohm as specified. I did a resistant check on all the speakers connection on the receiver side too and none of them shorted.

I"m stumped and need help before I open this thing too far off to put it back together correctly.

Thanks.

Comment by TTM77, posted on Aug 26, 2006

That's what I measured... DC voltage. I was hopping to see it changes but instead it give a constant 2.49v. I measured the speaker and it's still 8 Ohm so it's still good. If the speaker is fried the Ohm should be overload or short. But it didn't smoke or anything.

Open the receiver and don't smell any burn either. Inside there seem to be 2 decoder board because it has mpeg written on the board and chip. 1 board seem to do the amplification and it seem to not getting anything either. The main board will be a problem to troubleshoot since it has everything on it.

Anything else I could try?

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Best Solution

posted on Aug 26, 2006

techman

Rank:

Guru
Rating: 87%, 6564 votes

If you have a constant 2.49 volts on the speaker output Im surprised that your speakers are not smoking or making a BIG racket!!!? Sorry my friend you must have measured wrong as if you had a constant voltage on the speaker output, unluss the unit is a real cheapo unit, you wouldnt have speakers left or you would have smoke, as there should never be any DC voltage on the speaker outputs and if it was an ac voltage it would be making a big noise. Sounds like you should get a new unit or take this one into a repair shop. Good Luck

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No sound

Comment by TTM77, posted on Aug 26, 2006

Thank You!

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