Ok as so it goes, I had some backbox lighting out and some of the lights on the coin door etc. So I replaced the burnt plugs and pins, I checked the voltage at J120-11 and it it 7.1 volts AC just like the others. I checked all my connections for wire breaks with continuity on the DDM. The is a connection from every socket back to the J120-11 white and violet, and the other side J120-6 violet. Yet no power to the sockets.

My question is would I still get power at the J120-11 as I'm getting now if the Q12 (BT-138E) is blown? Would that be stopping the circuit from completing at the sockets? Just want to be sure before I pull a board and replace it.

Thanks.

Thanks Lloyd,

All the tracers are good, it is the one mounted on a heat sink. The game while being on for a while three others get nice and toasty, one other gets some what warm and the Q12 pretty much stays room temp.

I also tested the voltage at the U1 chip pin 11 and came back with 4.67 on DC. This was the U1 chip on the power board and not the CPU board. Pinwiki wasn't specific on which U1 to test nor AC or DC voltage or the range the voltage should be within.

I have buzz'd every socket to to its pin on the plug, each and every one had tone so there can be no breaks in the wire. I'll try moving that pin to another pin which is on a different Triac and see if they fire up.