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40 samsung lcd picture problem

The TV picture will OK for about 5-10 minutes. then it starts getting a liitle distorted, with a light greenish color. The picture after a couple of more minutes starts to flicker. then soon after that the picture will turn solid yellow with white lines verticle acrooss the whole screen and once in a while a distorted picture will appair. If you shut it off for 10 minutes, the picture comes on fine again and goes through the same cycle.

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First check the power supply board for puffy capacitors. then change the t-con board on lcd panel

Posted on Mar 09, 2010

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You may have a couple of problems.The shading is probably caused by a defective light tunnel, Samsung is covering the cost to repair this problem on certain models. You can call 1-800-samsung to find out if it is covered. The noise and color distortion sound like the color wheel is also beginning to fail. Both of these components are inside the light engine and I would recommend not trying it yourself.

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Liitle white dots on the screen


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