I just got a super nice clear coated Congo this week. Only problem is I noticed it started to reset every few games. I reseated all the cables, and I added a spare WPC Power Fix daughterboard. And I was still getting resets.
Then I narrowed down that they weren't random at all. It was only happening on games where my score was higher than around 800,000,000. And that it was happening 9/10 during the end of ball/New Ball cycle.
Any idea what would cause this? I have no idea. Previous owner said this wasn't happening to him at his house. I would guess that its something cause by either the new environment or the trip from his place to mine.