I am a retired broadcast engineer and I could do with some help,my
daughter is coming home from uni with a duff amp.symptoms one side
lost o/p then other side any help would be much appreciated


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On 23 Jul 2005 18:44:12 -0500, chris wrote:
I am a retired broadcast engineer and I could do with some help,my
daughter is coming home from uni with a duff amp.symptoms one side
lost o/p then other side any help would be much appreciated

I'm reminded of an old joke:

A fella with a severly crippled arm looks to the sky, and
implores, "Oh, God. Please make my one arm like the other one...."

www.repairfaq.org and look at the section for audio amplifier
troubleshooting.

chris:
The "hint" in the reply post by Allodoxaphobia is right on. You have
a good channel to make comparative component and circuitry tests with
the bad channel ..... both channels have identical parts so it doesn't
get too much easier that this. In a pinch, you can "borrow" parts from
the good channel to verify possible repair and parts replacement
solutions so you can, with confidence, order any semiconductors or
other components not locally available. Get your DMM out and start
testing and comparing. Additionally an audio tone generator and scope
may be of further assistance in finding where the signal is and where
it isn't.
electricitym
..
..