I have to turn the volume nob all the way up before I can hear anything, and when I do hear something its very soft like a whisper.
Sounds like your output transistors are bad, what audio you are hearing is coming from the driver transistors. Could be any number of thing else going on. Try selecting only one channel " a or b" at a time and see if the volume increases. It could be that your speakers have gone bad .If you have other speakers I would try that before taking it to a qualified repairman.
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