Question about Televison & Video
On many of these projection TV's they will use a monitoring circuit
that will monitor the vertical output section. If the vertical output
section becomes weak that may lead to part of the picture on the screen
folding over on itself. The monitor circuit will turn OFF the video to
prevent the tubes from having horizontal lines burned into them. This
may be what is happening to your projection TV.
You can try this quick check to make sure that the TV doesn't have a high voltage problem, open the back of the TV and with the room lights off, turn on the TV and look to see if the filaments in the neck of the tubes are glowing.
If you see that the tubes are lit, the problem may be due to the vertical fault or possible something in the video circuit breaking down.
Posted on Nov 27, 2008
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Posted on Jan 02, 2017
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