Pulled the chassis and inspected it. Filthy but all original.
Freed up the frozen tuner with WD-40, cleaned and lubed. Unfortunately, someone must have cranked on the frozen tuning knob and ground off about 15% of the phenolic gear teeth!
Amazingly the relay, focus wirewound control and all the candohms are good.
Proceeded to do a slow power up and actually got a raster.
