I've got a Shadow that has an issue with the DMD. Every time the knocker fires, the DMD starts glitching out. I can still see what it's trying to display, but there are is a lot of flickering of the image. I don't think it's the DMD itself as it seems to display fine otherwise. The glitching will also slowly start happening if the machine has been on awhile. If I shut off the machine and turn it back on, everything seems fine. Is this a ground issue? It doesn't seem to be related to the ribbon cable as unplugging/replugging doesn't seem to help, although I'm sure it's possible. Thanks for any advice you can provide.

I've got a new ribbon cable on the way. I'll also check for cold solder joints on the power connector. DMD looks fine and is not outgassing. Thanks for the guidance.

I got a new ribbon cable to the DMD and that wasn't the issue. It turns out it was fixed by reseating one of the wider ribbon cables towards the top of the board. I earned a free game, the knocker fired, and still no issues. Thanks for the help.