Turned on game this morning and my DMD display flickered and then went completely dark, nothing displayed. After checking that the Power driver board was producing the correct voltages to the Display and measuring the voltages at the display, I removed the DMD controller board from the display. I switched it with the one from my DE WWFRR which has the same DMD controller board, I then installed the JP display ROM on the board, and the WWF board works perfect in JP. I put the questionable JP board in my WWF with the WWF Display ROM installed, started up WWF up and Nada, no display, so I am assuming my JP Display controller board has issues. Looking at the JP controller board closely, there are no signs of any issues. The board is original but looks very good, nothing burned or discolored, no broken traces, hacks, or anything like that. There is very little written concerning systematic troubleshooting the controller board that I can find. A fellow Pinsider gave me some advice on what to check first using a logic probe to test to see if I am getting signals from the processor Chip U11 and U9 and the RAM chip. Will have to put the working controller board in JP with the JP ROM to see what kind of signals, etc. I get with the game on and compare to the JP board to see if there is differences and if the RAM is being addressed. Anyone have any suggestions, perhaps having experienced a similar issue with a DE DMD controller board? Shotgun approach won't work on this.
(Topic ID: 80267)
Ronkonkoma, NY
London, ON
