Chicago, IL
Quoted from CoinGuyNinja:I'm not sure I follow, if I put a ball in the hole the game senses it, but it never ejects the ball. Are you saying there are 2 switches? 1 for the multi-ball and another to eject it?
In switch test none of the switches stay open as it goes through all of them, in solenoid test the lower eject (#8) never pops the ball out .
Switch working ball not ejecting cpu is recognizing the is a ball in the eject hole:
Suspect driverboard fault confirm there isn't a break in the ground signal going to the coil.
Attach a wire to a ground or backbox frame momentary touch the wire to transistor # 8 tab, check if coil fires.
williams-system-7-driver-board_1_63633cc02b9de785815fb008109b954b (resized).jpg
