I checked and there's no short between the places where the 400V cap used to be. I also checked if they were both connected to the diode that was shorted and only one of them is, so the diode didn't short both legs of the cap.Ok, can you confirm (with the now damaged 400v cap removed from the board) that the holes it went into don’t register as shorted with a multimeter?
Please perform two measuments:
1. on ohms mode, touch the two, now empty, cap holes (vias) and post the result.
2. set the multimeter in diode mode, measure the exact same place (again) and please post the result.
After those, please use diode mode between the legs of the rectifier (google instructions if you need them) and post the resulting measurements.
1) 100 Kohms
2) 0 one way 0.555 the other way
Where's the rectifier there? I'm used to a bridge rectifier (either as 4 diodes or packaged together) but I don't see anything quite like that here.
I'll try to reconstruct roughly the connections from the mains to the cap later and report here. Basically, I'd really like to know if the shorted diode caused the explosion was was caused by the explosion. Argh, I wish I had measured it before!