I have an ATI All-In-Wonder Radeon 7500, and within the last few months, I started experiencing problems with my tuner reception. The picture would be very blanched, and now, it goes back and forth from being all washed out to being very dark. I've tried changing the cable, but that was no help. Might my tuner card have gone bad, or might I just need to upgrade or re-install the driver?

Daryl