Question about JVC AV-56WP74 56" Rear Projection HDTV-Ready Television

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IC's I live in Indianapolis, IN where can I buy These IC's. I have a JVC AV-56WP74 With the Red misaligned. Auto and manual convergence doesn't work. Im an enigneer and want to attempt to fix it myself. Thanks!

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  • 132 Answers

Take the board out through the front inspection hole. No screws holding board. Middle large plug disconnects from chassis, not converge board. All other plugs come off converge board.

If the large plug is a problem, just hang out the front and solder.

Be careful with foil on board, crappy board.

Pacific Semi for ICs.

easyab

Posted on Jul 29, 2008

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JVC AV-56WP74 56 in. Rear Projection red projector is not showing images and big red line in tv


If the red line looks like a swoosh of red across the screen it may be the convergence Ic having an issue.

Jul 04, 2011 | JVC AV-56WP74 56" Rear Projection...

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I have a double picture and the red apears to be


This sounds like convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually $200-$400 Be sure to vote/rate me if this helped Thanks!
See link for more detail
http://www.ehow.com/how_4575598_yourself-projection-tv-repair-convergence.html

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Color blue will not adjust on crt color conergence adjustment , picture on tv is double with blue on right side, auto/manual mode , the color blue will not adjust on right or middle side from side to side,...


This is a convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually charge between $200-$300

Sep 27, 2009 | JVC AV-56WP74 56" Rear Projection...

1 Answer

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Need to replace both convergence amps and any related resistors that may have blown open.

Jun 13, 2009 | JVC AV-56WP74 56" Rear Projection...

1 Answer

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I have the same tv set and about 4months ago Ihad the IC STK392-110 replaced. I was told that it was the most common problem with proj. tvs. It did solve the probem until last night when I went into the menu to change a audio setting and stupiditely accesed the convergence setting and decided to do an auto adjustment which mesed up my beutiful HD picture. Now I have the red out of alignment ad even after I did a reset and multiple manual adjustmets it is still off at the top and bottom af my screen.

Dec 27, 2008 | JVC AV-56WP74 56" Rear Projection...

1 Answer

JVC I'Art AV-56wp74


A repair facility will charge 400 to 600.00 for the repair. Or you can repair it yourself if you can solder. As both convergence ICs need to be replaced. They are STK392-110 you can get replacement ICs at the following link with free instalation instructions with pictures so you can do the repair yourself. Heres the link.
http://servicemanuals.vstore.ca/

Jun 15, 2008 | JVC AV-56WP74 56" Rear Projection...

1 Answer

JVC AV 56WP74 Problem after fix


Will the colors move into alignment controlling them manually?
If you can get the colors to align but they simply won't hold it's a matter of programming. If they won't align you still have a failure in the convergence circuit. If red or blue will only move so far but not close enough to align you have an amp problem.
Bill

Mar 31, 2008 | JVC AV-56WP74 56" Rear Projection...

1 Answer

Double vision On JVC AV-56WP74 56


You have an convergence problem, There are 2 IC's that go bad and a few resisters that can change value. If you flip the board with the Chips inspect the pins for cold solder joints. The IC's can be purchased from matelectronics

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2 Answers

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the ic is getting too much voltage check a diode that feed into the ic it has a short.if you dont locate that defected component it will cost you much more than the set lol.good luck

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