Question about Toshiba CF30F40 30" TV

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The vertical hold on my tv goes up and down. The picture still shows but its just in the center of the tv but if i hit the side it goes back to a fullscreen.

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There will be some loose contact in the circuit board of your tv. May loose sodering in the vertical output stage; around the ic used. Try resolder almost all the solderings around it will solve the problem. Vertival sync; signal may not absent in the main ic too. Anyway resolder the main ic too. Surely it will solve your problem.

Posted on Oct 14, 2010

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