Having problems with your Flat Panel Televisions ?

My RCA flat screen was working just fine and than as I was watching TV the screen flickered off and the it started flashing unusable signal. I did a rescan of the channels a couple come back that I have never had before. The sound doesnt work on the few channels that I do get and the picture and sound doesnt work on the ones I use to get. I also tried to put a dvd in. The sound works but not the picture doesnt. What do I do



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