If this is an actual colordmd display contact colordmd support. They are very good and helpful. They'll get it working!
https://www.colordmd.com/support.html
Quoted from ezed123:I did re-check the data cables and they are plugged in correctly. When I enter the menu on the color dmd, I get clear and crisp text. I continue to get good text all through the menu. Then when I exit menu and go back to booting up the game for game play, I get no text or graphics.
So, since my voltage to the dmd display driver is good and the dmd itself works (and my data cables were checked to be good on a working Tales from the Crypt game) I don’t know what to check next?
LTG ? Any thoughts