Question about Samsung LN46A650 46 in. LCD HDTV

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After being on for about 30mins my Samsung Series 8 picture pixelates and sound drops out for a second or two, like it has lost the signal and this repeats every couple of mins after that, the TV is only about 10 months old.

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Since unit is less than 1 year old, it would be covered under Samsungs warranty. Call 1-800-samsung and they will set you up for repair with an authorized service center. Your problem could be caused by a bad power supply board or a bad main board.

Posted on May 27, 2010

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If you actually have the Zenith model TV (B25A24Z), the trouble is not in your set. This model has only an analog tuner, and what it sounds like you are describing is digital pixellation. This is what happens with a digital-to-analog converter box when it gets a weak signal, with rain fade or heavy snow on a satellite dish antenna, or when a digital cable system has some signal problems. The converter equipment locks the last complete frame (or breaks up into blocks and freezes) and the sound is muted.

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If you can have a second person handy, use the signal meter function and view the signal. Then one person should move the dish a bit (likely upward a hair). If the signal goes up with just the slight movement of the still tight dish, that's the problem.

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