Hi, I installed a swemmer sys80b board in my Genesis not too long ago (<2 months). Things were working fine for awhile until the game died in the middle of a game.

Initially after power cycling, the knocker and the ball eject coils were energized. Now they are not doing that. The associated fuses are fine.

MPU is still getting the correct voltage.

I’ve already emailed Fred to see if he has insight, but wanted to post and see if anyone else has experienced this and what might have happened.

Bumping this as I tested my RIOT chips and they all seem fine?

I’m a little lost on where to go next...this is frustrating to say the least.

Yeah, I actually tried reseating the roms before doing anything else.

There is nothing on the display. I have replaced all the RIOT chips with known working ones, and still the same - nothing.

I’ve gone over and over this machine for something simple and I’m simply stumped, and very bummed.

Any help would be greatly appreciated. I am really at a loss.

It’s a goddamn brand new board!