On Thu, 23 Dec 2004 05:03:01 GMT, "Craig McLean"
put finger to keyboard and composed:

I have a Sears brand 27 inch television.

Recently at the top of the screen I've started to see really bright lines
alternating with regular brightness lines. The bright lines still have some
picture in them but it appears to be flipped backwards. I believe this is
called vertical foldover. Am I correct on this?

Initially the problem only occured after turning the set on, they would
eventually disappear. However lately it has become really bad, starting
almost one third of the way down the screen, and never going away. Although
they do receed abit.

Does anybody know where I should look to start troubleshooting this problem?
I'm an electronics hobbyist. In the past I was able to repair a complete
vertical collapse problem on this set. It turned out to be a bad vertical
power amplifier (an LA7832). I'm thinking it might be a capacitor in the
vertical output circuit, but I'm not sure.

Yes, change the electrolytic caps in the vicinity of the vertical
output IC.

Here is a datasheet with application circuits:
http://www.steveselectronics.com/files/la7832.pdf


- Franc Zabkar
--
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