I've had my 40" Samsung HD television for a little over a year now, but in the past one or two months it seems to have developed these two shadowy spots, like very thick lines that are darker than the rest of the screen. Is there a way I can fix this at home? I already tried one tip, which was to place ice on that spot for a moment, but it just lightened that spot for a while, until the screen warmed up again. http://i63.tinypic.com/vnilft.jpg

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