I have a Bally Eightball. If the game sits more than a week, when I turn it on it will not boot up, the LED stay solid green. If I turn on and off about 5-6 times it will boot up and work just fine. If I turn it on within the week it turns on fine. So by the time I start to test things, it will boot up after turning it on and off from testing stuff. Is there a capacitor somewhere that need replacing? I was thinking about a Alltek MPU for it, but I am not sure that will fix the problem.
I have had this game for 12 years now and once I fixed it all up, I have never had any other problems with.