Makes plausible sense, and it would explain the hum, but I didn't have the foresight to check the voltages at the start, so probably no way of knowing for sure. This has been educational to say the least! As for condition, I think the caps are still good (I hope) but based on my limited knowledge, I think the rectifiers are shot. I don't know about the diodes, but I would replace them out of an abundance of caution if I can get confirmation that the rectifiers are shot. I re-flowed all the solder joints on the board when I had it out. I had to disconnect a few wires and put heat shrink on the sections of them that I had burned during my desoldering fiasco. Good question. maybe @avionic or @Hamish119 or any member for that matter. No they are not to bad on price I don't think but I had no luck with replacements because I don't know what specs to look for/what is a tolerable range in the specs. That's why I mentioned them earlier in the thread. I am pretty good with caps, and resistors now, but semiconductors, no. I tested the caps when I pulled them with the china capacitance tester and they still show to be within range, so hopefully they are okay. They would be expensive to replace I would imagine. Hopefully they will chime in soon. But I may have scared them away! I have sunk so much money into this beast that I will never get back - but if I can fix it at least it will have been an education.