New to the Pinball world and need some help on my DE Simpsons. Game functions perfectly, but controlled lamps do not!
Here is what I know . . .
Here are the simple details:
1) All GI lights work perfectly
2) All Flashers work perfectly
3) NONE of the CPU controlled lighting works: No Millions, No Donuts, No Towers, No Specials, No Lanes and not even the specially controlled lighting in the backbox (although the GI lights in Backbox work fine)
Fuse F2 just above the HUGE blue capacitor blows every time I turn on the machine and I understand that this fuse IS the fuse that powers all the CPU controlled lighting.
Sure sounds like a dead short BUT where would I start? I can see the power supply wires (white, then color coded) and the returns (gray, then color coded) coming out of the CPU board (CN6 and CN7 I believe and I don't see any issues with these - no burnt connectors, etc.)
I've checked all the remaining fuses for continuity and all appear fine
Any thoughts on how this entire string/group would blow the fuse each and every time?
I checked 2 bridge rectifiers just above the large blue capacitor in the picture and the readings are below BUT I'm not even certain these rectifiers feed the CPU controlled lamps? I'm guessing that they do because they are immediately above the Fuse "F2" that powers the CPU lamps
BR1 above and left of big blue capacitor = 14 volts
BR2 above and right of capacitor = 39.3 volts
Help!