Hi
I have 3 switches that don't work on my Bally Strikes and Spares. They used to work, and then just stopped. They are adjusted fine and clean. The B center rollover, the Spinner and the S target. These seems to be different cabling interconnects J1 and J3 going to q34, q51 and q54. This machine had a good amount of acid and water damage on the mpu lower left corner that was my first attempt at repair and it has worked for a year. Everything else on playfield works, I can play a game despite these features recently failing.
Could this be diodes, on each switch? What is the common denominator between these items?
I have not repinned the board as it worked without.
Thanks for any ideas.
Chris