JVC TD-W301 dual cassette no output signal?
I picked up a JVC TD-W301 dual cassette (for free) because the transport worked on initial testing. There is no output from the deck though, either through the line outs or the 1/4" stereo jack. Both side work, low and high speed dubbing work, belts seem OK-- the transport mechanism appears to be fine.
When playing either deck (or in synchro dubbing mode) there is no signal at either output and no display on the LED meter above the power on segment. All other front panel indicators work as expected.
I've done the obvious, i.e. applied contact cleaner to the switches, checked the belts, visually examined for damaged parts on the board, adjusted the output pots, etc. I have a service manual for a similar model so have complete schematics. Any ideas where I should start troubleshooting? Any common failure points for decks of this era?
This came from a smoker's house unfortunately, and while it looks clean enough inside some of the other gear I picked up was filthy.