So far I've only looked inside the power supply but I see what you mean!
The neon power light lit up but no voltage out in either AC or charge modes.
There are several transistors crammed under a heatsink with a mess of wires going to them. Nothing is labeled.
Luckily, I fairly quickly isolated the problem to the mode switch. After several round of DeOxit and working the switch many times, I'm still not getting good continuity.
So I temporarily bypassed it and got about 12 VDC out. I hooked up the set and after a bit of tinkering got some reception. OK sound but couldn't get the horizontal to lock. Adjusting the internal Hor Freq control helped but it's just too far off to sync.
Also all the controls are very dirty - especially the sound.
First glimmer of life.
The closest I could get to a locked image.
