I got a game thats working. But the video is screwey. I would say its jagged. I know the monitor works. I've tested it with a known working board from a friends asteroids. Anyone have much luck working on asteroids. Thanks!
Looking at the picture the first thing I'd try is to piggyback a MC1406 on the chip next to the
X-gain pot. The Y deflection is complete so something is failing on the x axis the next thing would be the DAC Right next to it. Hope this helps!