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Contribution d'origine par : m_doeden ,


more than  likely the LCD panel is going bad. I came across one tv the a ribbon  cable wasn't in all the way but  there was a dark part of the tv about   inches going top to bottom. Pinch the bezel a few times around where the  dark spots are on the top or bottom. if they move then you have a loose  connection..if they don't move and they are getting bigger  it's a bad  panel.