Thanks for the reply. I ran the switch test as you suggested. I don't really notice anything happening and the display just shows "0". I'm not sure if it's supposed to scroll through switch numbers or anything, but from what I can gather, if it shows "0" that should mean there are no stuck switches? I thought about a diode on the solenoid too, but I don't have another solenoid or diodes to replace this one right now. I did try grounding out the solenoid and it does fire when I do that. Would that rule out the diodes at all? I do have a solenoid from my Stern Meteor machine that is for flippers. I guess I could solder it in place for testing purposes? Also according to the schematics, the left slingshot is ran through the Q9 transistor on the driver board. I tested the transistor and it appears to be good, but do you suppose it might not be?
