I don't know the best way to do this, but I feel like we need to know the health of the P/S.
It looks like the transformer in yours is set up the same as my G-6700. When you look at the transformer do you see a row of output studs with color jumper wires?
Are the jumper wires in this order: Red,Gray,Red; Yellow,Black,Yellow; Purple,Purple? If yes, here is what I want you to do -
1. Set your DMM for AC Volts.
2. Connect mini-grabbers to the two Red jumpers. Turn power on, read meter, turn power off. Reading should be ~43VAC, or less.
3. Connect mini-grabbers to the two Yellow jumpers. Turn power on, read meter, turn power off. Reading should be ~41VAC, or less.
4. Connect mini-grabbers to the two Purple jumpers. Turn power on, read meter, turn power off. Reading should be ~7.5VAC, or less.
I’d also like to know the voltage reading after the 43VAC has been through the bridge rectifier and converted to VDC. This can best be accessed at the underside of the P/S filter caps – the large black canister caps next to the xfmr. Be very careful as these points carry a lot of current and are potentially deadly. With the power off, attach one mini-grabber to ground and use the other to determine which lead of each cap goes to ground and then attach the other mini-grabber to the “not-grounded” terminal of the cap. Now set your DMM to VDC, turn power on long enough to get a reading and turn the power off. Repeat for the other filter cap. Always record the wattage of the DBT bulb when you take readings so you can account for any differences.
Might as well read the rectified 41VAC. Junction of R49 & R50 S/B ~ -59VDC, and the inboard side of R44 (right above R50) S/B ~ +57. (readings will be lower # with DBT)
Some of this may sound like 3rd grade, but I always try to be overly cautious when dealing with unknown voltage and current that could be lethal. Each of us must develop protocols for safely handling these situations, and this is part of mine.
PLEASE query me (or others) if any of my questions or instructions are ever unclear, or you don’t understand. Your silence tells me that you understand.