
Mine worked swimmingly until a few years ago, when it suddenly, catastrophically didn't anymore.
Stumped, I sent the board to my learned and esteemed friend Jeff, world-renowned expert on "the bideo games" who bafflingly determined that nothing was wrong with the board after all. I'd already tested the power supply, so this left only one other possible culprit: The actual wiring harness in the cabinet. This seemed highly unlikely, as a harness actually going bad is pretty much unheard of, but Jeff supplied me with a known good harness anyway as an experiment. And after an unreasonably long (> one year) interval, I finally installed it, and wouldn't you know, IT WORKS. There was much rejoicing.