Hey All - while working on another issue with my Hollywood Heat (Gottlieb System 80B), I seem to have done something to cause it to stop booting.
I removed the battery last night, removed the 5101 RAM, socketed the position, and installed NVRAM. I've never had an issue doing this in all the machines I've added NVRAM to, so when I hooked everything back up and powered it on, I was surprised to find it's not booting up. I get GI and attract mode lighting effects, but no tone, no display, game won't coin up or play. Solid red light on CPU board currently. The fact that it's in a form of attract mode seems good, but I'm at a loss as to what I might have done to kill it.