I've got a recently acquired Stargate (Gottlieb System 3) I'm trying to bring up to speed, and one of the problems it has is a display issue that I thought was outgassing, but appears now not to be, as it looks fine in a High Speed II The Getaway.) It also displays pixels on the entire display during self-test. Where should I be looking for issues? DMD controller board? I've attached a couple photos of the display.

IMG_0997 (resized).JPG

IMG_0998 (resized).JPG

I'll check that. They don't happen to be generic between Williams/Bally/Gottlieb do they?

BTW, I'm running v4 of the game ROM. v5 will be on its way to me once the Nor'easter lets up on the PBResource guys.

OK, ruled out the ribbon cable between controller and display. The Getaway display worked fine in Stargate. So I guess it's a simple case of tired display with outgassing.

Should I avoid using this display in a Williams/Bally game? Is there something potentially damaging about using it there (for the controller boards)?

Thanks for the advice. I may swap them short-term, depending on how quickly I can lay in a good one.