I've hit a wall with a 9900 that I'm working on. I have no video output on any of the coax external outputs except J18 on the back door. I started by swapping the display adapter. No change. Swapped out the coax wire harness. No change. Updated to V.62 software. No change. Got desperate and swapped out the image processor and video controller. Still no love. Need some help here guys I don't know where to go at this point.
Equipment: GE 9900
