My Laser Cue is blowing the Solenoid fuse on power up. This is being caused by the Power Driver board, just not sure which part. I swapped in a known working Power Driver and the game booted and played fine without blowing the fuse. I swapped back in the original board and the fuse blew again. What should I check on the Power Driver? Thanks!

Yeah, the previous owner replaced the interconnect and it looks good.

Thanks, Peter.

OK I tried your suggestion. When I unplugged 2J12, 2J11, and 2J9 the fuse did not blow.

With only 2J11 unplugged the fuse did not blow. With only 2J11 plugged in (2J12 and 2J9 unplugged), the fuse blew. So the problem seems to be at 2J11.

Edit again: not fixed. Peter pointed me in the right direction. That connector controls solenoids 1-8. So I checked the Transistors associated with those solenoids and found Q15 to be faulty. Replaced the transistor but the game is still blowing the fuse and the transistor every time I turn the game on.

Well I thought I had solved this, but the issue started back immediately.

I replaced the transistor (Q15 for the outhole) but it went bad immediately and the fuse is still blowing at power up. I replaced the transistor again, but again the fuse blew and when i turned the game off and touched the transistor it was hot as hell and testing bad again. So not only is the fuse blowing at power up, but the transistor is blowing too. The coil at one point started smoking and now the cover is toast. I tested the diode (took it off and tested) on the coil and it tests good. replaced it anyway but not sure what to look at next...?

OK, just put the known working Power Driver back in and the fuse did not blow, but the transistor did. The game plays fine except the Outhole kicker does not work even with the known working board.

Put the original board back in and again it blew the fuse, transistor, and the Outhole solenoid became extremely hot.

Think it could be the coil itself?

Edit: Yes it was the coil itself. Replaced and everything is good.