If nobody seems to have that issue, you might try calling 800-SAMSUNG to see if they can walk you through some over-the-phone diagnostics.
Hello all. I have a LNS3238D. I have had it for almost 3 years and have just recently had an issue with it. While watching a program, the screen suddenly went to all reds and yellows and the screen response is very slow. Any moving image leaves trails and ghosting. When I switched the input to antenna (with no antenna hooked up) the snow on the screen is the normal color but looks like it is in slow motion. The symptoms persist across all connection types, HDMI, Component, S-video, A/V and VGA. I disconnected everthing and put my old tv back in. I let the unit sit unplugged for a day and retested. The unit powers up and turns on normally, but the display will have very slow response. The input display and the check cable message(cables are disconnected)in the upper left will ghost and remain on the screen long enough to leave 3-4 ghosts behind as it moves around. After leaving it on for about 5 minutes, it started working normally just as suddenly as it quit. It worked fine for 2 days and then it quit again. Came back after pulling the power cable for 90 minutes, but quit again within an hour. I have done quite a bit of searching for anyone having the same sort of problem with any brand of LCD with no luck. Anyone have any ideas or suggestions?