The image on my Dreamcast just stays green. I'm using a Scart cable, which has a switch to switch between RGB and VGA mode.

After I changed it in the middle of the game, it turned green and won't go back to normal. I've already tried formatting the GBS, restarting, and nothing. I don't have another Dreamcast to test. But on the AV/Composite cable it has normal colors. Does anyone know what it could be?