I am hoping you guys can give me some guidance on a weird reset issue with my JD. I cleared up a few opto issues and problems with the sound board. After that the game refused to boot, or it would turn on for 10-20 seconds and then reset. During the resets D19 was lit, D20 was out and D21 was lit.
Pressing on the ASIC chip seemed to help and after another reset it played fine for an hour. Then after restarting it, I had another reset but it was good for another hour after that. It seems like the resets only occur in the first few minutes after power on. No issues with the 5 volt circuit - it's steady at 5.3 volts.
So where should I focus on troubleshooting? Is it likely time to resocket and replace the ASIC? Anything else that could be contributing to these issues?