Run the gun test and make sure the switches are reporting during that test. The cam under the gun pushes on the switches and it might not be pushing far enough to activate the switches. The actuator arm on the switches may need to be adjusted.

Yeah probably one switch. I get STTNG confused as I think there are two on that one. I assumed maybe you were testing the switch with your finger. Maybe something with the motor board not turning the gun off. That would be my next guess.

It might not be the motor board but Q36 on the power driver board that's locked on. Test that transistor first. But yep that's the motor EMI board.

That's weird. In switch edge test does the switch under the playfield register as switch 76 'gun position'? Just seeing if that is in fact what it's registering as so as to eliminate a diode or switch matrix issue. If you press it 20 times does it always register as switch 76? Does a game start? Any credit dots?

That's a good point. I don't think it's that long. But after I run the test it does a fast sweep, followed a slightly slower sweep and keeps doing this 7 or 8 times (maybe a minute tops) until it's a slow sweep.