Question about LG 42LW4500 3D LED Television SWV3432S/10 HDMi Cab- 24 Carat goplated

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LG 42LW4500 horizontal lines

42LW4500 shows 5 seconds normal picture, than you get white horizontal lines for 3 seconds. Than again normal picture for 5 seconds - 3 seconds... and so on. What is wrong. I already dit a firmupdate but no result.

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