Hi. I could use some help from switch matrix experts. I've developed a problem on my Bally Special Force. When the Bomb O switch is closed, it triggers that switch and the right bumper switch. I've circled both in the switch matrix diagram below. I've checked the diodes on both switches, and they were good. I replaced them just for good measure, but the problem persists. Am I right it it is likely a short (perhaps a diode) in the column (think row with other games) that contains Bomb B, Bomb O, Bomb M, Bomb B, Capture D.T., and Weapon D.T.?
I just started playing the game again after a bit of a break. I was waiting for a new solenoid expander relay board which I replaced. I did not go anywhere near those switches. However, it is possible that just the process of lifting the playfield knocked something together.
Thanks in advance for the help! (I'm not great with switch matrix issues.)