Hey everyone. A little over a year ago we purchased our second pin, black night. It was a little rough, we were told it was sitting in a barn for a while, but it had been gone through by a professional and we were good to go, and we were for a couple of months. then when we were playing it one day, it started smoking a bit and basically stopped working. it was popping fuses every time i powered it up so we decided to have the mpu and driver boards gone through by a professional(the sound board had been replaced prior to us owing the machine with a rottendog board) and sent them in, and all of the usual suspects were fixed and the boards thoroughly tested and cleared.

when the boards came back i installed them in my machine we noticed another problem. while playing the pin seemingly at random events in the game the ball would hit a switch or i would hit a switch(magna-save) and the controls would lock up and while the lights kept flashing the game went dead and none of the controls will work until you reboot the pin. its intermittent and happens on different switches, sometimes you can get a few games in before it happens. i ran the switch and solenoid tests and everything seemed to check out. any thoughts of things i can look at? Thx in advance!

Ok, first off thanks for all of the advice. Me and my daughter have been troubleshooting using your suggestions. We believe we’ve narrowed it down to a flipper diode as you suggested. We’ve ordered some 1n4007 diodes to replace the 4 flipper diodes. I’ll update after the install/testing.