OK.
I've got a couple of standard diodes but the forward voltage is about 1V. Is that too much?
By "problem not solved" I mean it is still burning hot, even without USB connected. I did cut the trace near the USB and now I need the 12V supply to connect. I cut the ´first´ two trace lines, same as @enif.
Worth mentioning is that I just fixed a damaged pin at the ATmega chip by remapping the thermistor circuits to an expansion port, this with @nophead's help. Damage was caused by dropping a metal object on the board while connected. I don't think anything else was damaged because everything is working now.
I've got a couple of standard diodes but the forward voltage is about 1V. Is that too much?
By "problem not solved" I mean it is still burning hot, even without USB connected. I did cut the trace near the USB and now I need the 12V supply to connect. I cut the ´first´ two trace lines, same as @enif.
Worth mentioning is that I just fixed a damaged pin at the ATmega chip by remapping the thermistor circuits to an expansion port, this with @nophead's help. Damage was caused by dropping a metal object on the board while connected. I don't think anything else was damaged because everything is working now.