Anyone that repairs boards can repair it since it is out of warranty. You can check to see what cost the distributor can have it repaired for.

Try this one.
https://pinside.com/pinball/forum/topic/for-sale-stern-led-dmd-repairs#post-2708844

Although not identical, I had issues with my Mustang DMD as well. Starburst sent me three DMDs to swap out, same problem (lines would go out along the top of the DMD). Finally sent their tech to me, he didn't really do much of anything, other than swap out the ribbon cable. Problem still persisted. I contacted SB again and said, if it isn't the DMD and it isn't the cable...it's gotta be the board.

Last week they sent me another replacement cable, DMD and board. All works fine now.

Seen this on many Stern LED DMD's, our KISS-LE had it right out of the box.

The missing "dot" is the Diode in that LED Row that is shorted out locking the rest of that LED Row on.

I'd still bug Stern to see if they will cover it, you never know.

If that doesn't work go with the link above, he sounded pretty reasonable.

Kim

Did they say how much the flat fee is?

Yep common issue. If your distributor sends you another display it will be one that was returned and repaired. They make you send your bad display in and then they repair that to send to someone else that has the same issue as a replacement.

https://pinside.com/pinball/forum/topic/sterns-red-led-dmd-anyone-have-issues

I would wait for a for sale, you see plenty of people selling these DMD's as they go with color. Price is typically $100 plus shipping for the right deal. The displays are total crap I have had many of them go out and don't have that many stern games.

Personally, I would sell the LED DMD display and install a ColorDMD. But hey, that's just me.

Yup that's what I'd do too.