Question about Toshiba 27AF42 27" TV

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My picture presents a thin horizontal line when tv is turned on, sound is not affected. This has happenned twice before, for indef amount of time, then all of a sudden works correctly.

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This is an easy repair if you've ever soldered and would not be too costly for a repair shop to do it for you. The problem is a bad Vertical Output IC (usually mounted on an aluminum heat sink with the part on it labeled LA78?? ) and 1 or 2 bad capacitors. Some times you can even fix the problem by re-soldering the contacts of the IC- To find the IC follow the 4 wires that come from the Yoke (which is a contained coil of wires slipped over the neck of the picture tube(s)) back to the board. 2 of the wires go to the horizontal o/p and 2 to the Vertical o/p the thinner gauge wires are for the vertical. Be sure to vote/rate me if this helped Thanks!

Posted on Nov 12, 2009

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Screen goes to a thin horizontal line


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