LCD/LED replacement display garbled after the game was shipped: reseat the cables
After a game arrived by freight, its colour replacement display flickered and went dark, then showed garbage, although its own info screen displayed fine. A display that can show its own test screen is working, so the fault is in the data reaching it: check that every ribbon cable is seated, not offset, and has its stripe on pin 1 at both ends, press down socketed chips on the DMD controller, and check 5 V at the display. Here a loose cable was the cause.
Systems
Games
Related tips
- Blank display, garbage or diagonal lines: reseat ribbon cables
- Display intermittently garbled after new driver board and cables: the DMD itself
- WPC DMD shows garbage and a RAM address error: reseat the ribbon cables first
- Outgassed displays and the 5 V supply
- Replace the whole display, not just the glass
- +5 V or +12 V missing at the display
- WPC display and DMD controller board versions
- Dot matrix display supply voltages
Source: Pinball Repair help group!! (Facebook group)