I’m trying to repair a Sega Space Jam for someone. The game resets after about 30 seconds of play. I have checked and re-seated all power connectors, reflowed suspect headers on the driver, bridges tested out fine (surprisingly), and changed and cleaned one top right connector that had severe battery corrosion, which I thought for sure was the issue.
The display power connector is completely loose, yet, the display works fine, as in the headers must all be completely broken. The display was working completely (prior to resetting) until I disconnected and reconnected things on the driver board and DMD controller, and now the display only comes on with the rom version info, and nothing else. I replaced the 5v connector, but no change.
I tried booting without the display plugged in, as with the loose connector, I thought for sure something was dragging something down, but no change in the resets.
I’m not familiar with whitestar boards, but did a bit of research. I also tried the driver in my TSPP, and although it ran with displays and started a game, it would not spit out a ball, and only a few lights were active in the inserts. This was prior to replacing the connector (I can’t recall which one, second from the top right, across the top).
The only other thing I can try, given my research, is adjusting and upping the 5v pot. What else should I look for? The guy is an hour away from me, so I’ve been trying to figure this out between visits, but I’m thinking now, being more severe, I may have to bring the machine home with me to work on and try to get going.