I am fixing a Rocky and Bullwinkle for a friend, on startup, all coils fire in a sequence and dmd is not on. It may do that a few times or only once. Once the game boots up, start a game, the launch button does not work and niether do the flippers. As far as the flippers go, it is not the flipper board, switched it out with a known working board, same problem.

A few weeks ago it would just keep firing the balls out and all coils would fire in sequence. I found the solder on the pins for the relay that is on the playfield power board cracked. Once solder was removed and reflowed the game worked fine for a couple of weeks until this happened.

He has a lethal weapon 3 which has the same boards, can I switch them out one at a time for troubleshooting? What could be the likely problem? CPU or playfield power board?

Next time I see the machine, I will try these suggestions. I'll report back.

Nick

Thanks, that is what I thought. I will try this next week when I go back.

I like to see threads where the fix is posted, it can help someone out.

I found the F5 fuse kept blowing, checked the bridge rectifier on the PPB, 1 leg was open. After digging online I found a replacement, original is obsolete, abit on the pricey side though.

Replace the rectifier, game now fixed.