wrote in message
ps.com...

If you probe around with something very low power, you wont scare your
ears or damage anything, and you should find where its all good. The
signal quality may not be good within some parts of the old dead power
amp, because the dead output trs will have made the feedback loop open
there. Just keep going back till its good and clean.


NT

Well, turns out it IS as simple as discrete components: the pre-amp ends
just past the tone/balance *IC*, and the power amp starts there. I made a
probe out of the inputs to a disposable powered computer speaker.

Thanks for your insight.

Dave