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.