Need transformer help, please.

[viridian]

PB, and right you are! D1 is at 6.25V and D2 is .52 millivolts.

[Paul Birkeland]

What are the voltages at the "O" pads on each side of the center C4S board with no wires attached to those pads?

[viridian]

PB, sorry for the delay; a little family issue. On the good side at the "O" terminal 231V DC. On the bad side, the voltmeter seems to just hunt but doesn't lock on at any voltage.

[Paul Birkeland]

Do you have a stable voltage at both the "I" pins on that center PC board?

[viridian]

PB, wow, you're Johnny on the spot. Yes, with the wires still disconnected from the "O" pads, I am getting 231V DC on both "I" pads.

Thanks again, Marty.

[Paul Birkeland]

Try heating up the middle leg on the MJE350 that feeds the "O" pad that's problematic.

Otherwise, I'd see about getting a replacement PC board for that center position.

-PB

[viridian]

PB, agreed it's time to start anew and populate a new board. I wonder what the original builder has in store for me after that........

Thanks again,
Marty