Hello,

I am working on a Rollergames that has a Rottendog MPU011c/Mpu004. It works except some of the special solenoid do not fire in the correct order. When the board is on the bench the SS select fires them in the correct order, but this is not used in the Rollergames. When I have the game in test I can ping the logic all the way back to what port on the PIA as sending the incorrect signal to the driver transistor. All dips and everything appears set correctly. I can’t imagine 3 ST micro pias all died on what I am being told is a brand new board. Had a buddy of mine tell me he had same problem with a Rittendog and a Rollergames. Anyone seen this or have any recommendations?

My man! Thank you so much! The dips on the board are indeed installed backwards!!!!

It didn’t have that. It had DE and WIL.