Pinball help (Lost World)

Hi guys,

So I'm helping to fix a Lost World pin for a friend. He moved it while it was on and it blew out somewhere. He had another friend put the MPU in his Playboy pin and it worked fine, so I've been working on the power supply board to get it running again.

I bought a refurbishing kit with new rectifiers etc, and put it all together. After flipping the switch, I measured all correct voltages EXCEPT TP3 which was still showing 35VDC (should be 11.5 +/- 10%).

So I checked my connections etc, everything looked fine. Put it together again and flipped the switch... sparks start to fly. None of the fuses blew, and from what I can tell the sparks originate close to the AC IN pins on the J2 header. For the life of me I can't find the problem.

Does anyone have an idea of what is going on?
Does anyone want to sell me a power rectifier board AS-2518-18?

Thanks guys

make sure a screw or something is not lying against traces on the back side of the boards. It's all I can think of off hand.