I just bought a 2nd HDTV , the model is Samsung - HL-S5086W 50-IN Widescreen DLP HDTV with 720p Resolution and have been having a problem with it from day one. When I custom set the color and brightness on the TV in about a hour the color changes back to default. I took the first tv back a got a different one and still the same problem. I bought it open box so no book, but my other HDTV , the model Samsung HL-S6187W 61" 1080P High Definition DLP TV and dont have this problem.

Any help would be greatful.