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15 volts audio into the output plate contact made sound. So good output transformer and speaker.
Testing for signal at grid of the output tube (not easy to get probe in) found no signal.
Getting the 6AV6 out is not easy, but done. Dead filament with over 1/8 inch of coiled heater showing! I was supposed to have a NOS 6AV6 but can't find it. So I stole one from another set. CT-100 fixed.
I think I should learn that it plays to try swapping tubes before circuit tracing. But for audio in a CT-100 it generates a lot of swearing (no no No No NO NO NO! NO!).
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