I have a very strange problem on my Atari 5200 with Video Mod. The early games like Centipede, Super Breakout or Galaxian work fine:
But when I try new games like Frogger or Dig Dug, the video becomes very bad.
In Dig Dug the start screen is fine, but then if I want to start it's messed up again.
Does anybody know what the problem can be? I bought it years ago already modded and had that problem already then.