This game finally wore me down to ask for help. The game plays fine but, as you can see from the pictures, the graphics are corrupt. Both, foreground and background. I've changed all the sockets. No words are legible. The foreground graphics "seem" to be whole, but its like there are invisible bands on the screen that when any of the foreground graphics pass, the image disapears. Thought it was a ram problem so all the ram is socketed and checked (no change). It's not a eprom issue or any of the socketed chips, I've verified the info and they all work in a known working board. It's not the jumper caps, or so I believe... they have all been replaced and I've verified the shorts across them. I thought it was the 74ls166's in row L? (there are 4 of them next to the foreground eproms). Nope, not them either, although they seem to be the only chips that give me different o-scope readings when compared to a known working board. Now, I'm lost and need suggestions.

