So I was playing my Black Knight today and the left upper and left lower flippers suddenly stopped working mid-game. Everything else works just fine, including both upper and lower right flippers.
Before I start troubleshooting the issue could someone give some advice on where to start looking or if there is a most-likely culprit to look for first? I figure it cant be a fuse or a relay since the right side flippers work, and it can't be a burned out coil since both left flippers went out at the exact same time. From what I gather the flipper coils don't use the TIP102's like the other coils (correct me if I'm wrong). I am not very familiar with System 7 hardware, so any advice that may narrow down what to look for and save time diagnosing the problem would be greatly appreciated.