Can anyone tell me what to check for when your middle coin-setup coins up to the max (10 credits) when depressed a single time? It makes a machine-gun sound instead of a single tone for the coin drop and maxes out the credits. The other two slots work fine.

It's the one wired with the blue wire on the middle mechanism that is the problem.

I also bought brand new cherry switches and the problem still happens. Whichever switch the blue wire is connected to--it coins up to the max.

Bally. Solid State. Mr. and Mrs. Pac.

Thanks everyone for the quick reply. I found another post with the exact problem here: https://pinside.com/pinball/forum/topic/multiple-credits-from-one-coin-mech-switch-hit

As Gnatty suspected, it was the dip switches. I just corrected 17-20 and he/she is coining up nicely. Now to solder on new wires and drop in my mechs.

Thanks, guys!