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What is the model no. of your TV?
Is the sound normal?
The model no. of the TV is LN-S4041D. The sound seems ok. I use a SONY 5.1 surround system (which is working fine), but just to check, I turned it off and ran the TV speakers, and they seemed to work fine. The line across the screen seems to stay primarily gray or pink (but can turn purple or red, too), but in some places you don't notice it, depending on what images are on the screen.