Semi-Solved
Ok, the screw that bolts the HOT to the heatsink was causing the arcing. Oddly enough, this had never happened before. ANybody have an idea of where I can get insulated screws and nuts?
I Think I blew the HOT. I Pulled it from the board and it is showing a short.
I see a bit of a discrepancy in the HOT that this board calls for. The board currently has a 2Sc5144, but the manual calls for a BU4530AL.
I tried another 2SC5144 that is testing as good, but when I turn on the...