Alan,
When I was diagnosing low audio output in s/n 3641, one of the several
things I found was a leaky cap at C10. There was a small AC component
on the /AGC OFF signal that was making it through to U1 pin 2, and
that upset the entire downstream chain.
It's a stretch, but the fact that you can't get full AGC voltage
in test 8 sounds kind of familiar...
73 de chris K6DBG
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