Vertical and horizontal lines Bravia KDL 55w828b

Vertical and horizontal lines Bravia KDL 55w828b

Hi everyone! A friend of mine gave me his Sony Bravia because of some problems. When the image is still some vertical lines are visible but when I try watching a video instead of the lines I have a ghosting image. All the problems almost disappear after an hour and the only thing that remains is a slightly flickering horizontal line.

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