I'm new to sys1's. Game has a ni-wumph board in it. From the bit of research I've done, I've got some connectors to rebuild - i'm just not sure where to start.

Game is booting
Displays work
CPU controlled solenoids (drop reset coils, outhole kicker and saucer kicker) all work fine.

The non-cpu controlled solenoids (flippers, pops and sling) seem fairly simple but they're not working at all. The switches do not register in game or in test, and the solenoids don't work in game or in test.

I checked for broken wires and didn't see anything. Also - it appears the game over/tilt relays are gapped correctly, although I have very little experience with them (relays in general). The fuses on the bottom of the cab all seemed fine.

Where else should I be looking?

Note - the switches don't register. All other pf switches do.

Yes - adds credits and starts a game - all switches show open in switch test. The 2 relays at the bottom of the pf are the game over and tilt relay.Buckrogersbottompf.jpg

All switches that aren't related to the pops/left sling score correctly. None of the switches associated with those solenoids register in test or in game.

Correction - the scoring switches of the effected solenoids do score, but you have to actuate the mech by hand - the scoring switches are like EOS's so they're all the way at the end of the kick/pop.

We adjusted the tilt/game over relays last night and determined they weren't getting power. Traced the line back to the transistor that controls them and it's path is good. Going to do the ground mods and rebuild the connectors in the path from the power supply to mpu and mpu to driver board.