[FERNSEH]

I've redrawn the power supply circuit and I'm sure I've got it right now.
The collectors of the PNP regulation transistors XA703 and OC203 are connected to the primary circuits ground line which goes to the battery negative. In my earlier power supply circuits the collectors and emitters of the transistors were transposed.
The restoration is held up until a replacement OC35 is found. All the 5000microfarad smoothing capacitors will have to be replaced.

DFWB.