Proscan 36in. TV works fine when you first turn it on. THen after about 40min -1hr the picture goes dark. Sound is ok.
You have a problem in the Hi voltage or horizontal drive circuit most likly. Its a slight possiblity that the video is going out because of a cold solder connection from the flyback transformer blanking pulse to the video/sync separator circuit as it does and has happened in the past. This set should only be serviced by a trained service person as there are no real user serviceable parts inside this set. Good Luck
Posted on Jun 16, 2006
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My proscan is model ps35123, the vertical capacitor was replaced, but it shorted out after replacement. Serviceman said it is the transformer on the picture tube. Mt tv is black with a 1/2 inch line in the center of the screen. Does the picture tube need to be replaced or is there some other fix for it??
Bernard
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