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My JVC AV-48WP30 picture is distorted vertically to about half the screen height. If I turn the tv on and off a few times, sometimes it will correct itself, until I turn it off again.

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Try resoldering the vertical output IC that should correct the issue repeated off and on cycles often tend to bridge the solder connection causeing the set to work untill power is cut off.

Posted on May 16, 2008

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Ur convergence is dead.Must replaced the 2 convergence ICS and all it resistors.The shop will cost U $300 for parts and parts.

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Description sounds like shading from a defective convergence circuit. If you replaced STK392-110 with 150, then re-install new 110's, or new 150's and re-design the circuit and change low-ohm resistor values to compensate for different IC's. It is not the same as a brighter light bulb.

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1 Answer

What's the difference between AV-48WP30 and AV-WP74


They are both the same size screen. (48" diagonally)

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C-Dog

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1 Answer

PLURED PICTURE


http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
Sony Convergence
http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/
http://www.techlore.com/article/19631/Sony-Convergence-Procedure/

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Here is a picture of my TV problem, the green horizontal line is from the camera flash. thanks for the help.4d2ca33.jpg

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try unplugging for a few seconds the plug it back in

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The convergence circuit needs repaired. I did the same job yesterday on this model. I not only replaced the convergence ICs, but, I had to replace a couple of resistors and a coil. The convergence alignment was minor after that.

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