The patient is the Agilent U8002 power supply. Attempting to adjust the voltage or current above 0, and turning the output ON causes the V to flash. Looking at the output of the power supply shows no voltage change: the output is always <50mV DC.
I took it apart, and the obviously dead parts are Q5, a IRFP150N, and D5, part unidentified. They are all in the vicinity between the large heatsink and the large capacitors: obviously the voltage regulation circuit. It looks like the IRFP150 got hot enough to spew, and spilled stuff out in the area. I cleaned it up, and it looks pretty good now.
R10 and R58 (both next to D5) looks a little worse for wear, and I will replace them: R10 looks like a 47K, but I cant read what R58 is. D5 looks to be a zener, but I have no identifying information for it.
I have some IRFP4468 units, which looks like the same family but heavier duty parts, so that should work for Q5. I need help identifying D5 and R58.
After I replace these parts, I will post more information.
Thanks,
TH