Bixbite said:
Well, DSi and DSlite don't have those knobs the DSphat does. I can think of only maybe some sort of cheat is on, or you guys are increasing the brightness and are just a little sensitive to the light. If not, its a hardware issue, I'd say it has nothing to do with your cart.
The DS Lite does have the knob, I'm staring at it right now... I'm pretty sure the DSi has it too, but I've never opened it up so I wouldn't be able to say with perfect confidence. So that may be the issue.
However, it may be your ribbon cable. I had a DS Lite that would turn almost completely white with random sort of wisps of color moving indicating that it is displaying something if I had the DS opened past 160 degrees or so. It started out as a slow fading of color, odd colors, etc, but it got worse and worse. If you CAN, open it up, remove the L button, put it back together, and turn on your DS while sort of shifting your cable around (of course after checking the obvious, if it is plugged in first). If the colors start changing drastically, and it is properly plugged in, you may have to replace the screens.
Is it happening on both screens?