I'm working on a recently repopulated Lost World pf. Yesterday, everything booted up, and aside from some GI lights and one coil, was all working. There were multiple frayed spots/breaks in the GI ground wiring, which I mostly corrected. Almost everything lights properly now, but the game now won't boot with everything connected. Boots fine with J4 only, J4 + J1, and J4 +J1 and J3. So, the problem is isolated to J2 and the playfield. I think pretty obviously I connected something incorrectly and created a short. Any tips on how I narrow it down?

Thanks!!

Yes....memory banks warming up. I've done this procedure before. Thanks Big Al.

barakandI - you've mistaken me for someone with waaaaay more tech knowledge then I actually have. I am at the red lead goes here, black lead goes here level.

Found it. The 'bad' wire wire was at pin 5 on J2, a yellow/red wire. Traced it and found a solder splash had shorted a lamp to a switch. Now the game boots reliably. Many thanks!! Only a couple more issues and she's ready to play.