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

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Convergence IC,s overheat

JVC model AV-56WP74. Convergence was very bad. Changed both convergence IC,s, Auto convergence very good, but both IC,s run very hot, will fail from the heat in about 4 hours.

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Make sure there is enough heat sink compond between the IC's and the heat sink itself. These IC's do usually run fairly warm to hot but that heat should be disapated onto the heat sink.

Posted on Apr 26, 2007

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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

Posted on Apr 24, 2007

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Someone offered me a jvc hdtv av-56wp74,and one person said just the bulb in the lamp has to be replaced;then when called jvc they said i had to by colored tubes for 300.00 each,,,,who do i believe


The tubes rarely fail in this model so it may be a convergence issue instead. Once quick test is to goto your convergence menu and see if you can adjust red and blue. If not its has failed and needs to be fixed.

Here is an example video


Feb 14, 2012 | JVC AV-56WP74 56" Rear Projection...

1 Answer

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...

1 Answer

AV-56WP74 the convergence is off. blue is way out!


You will need to replace the Convergence ICs and resistors you can get the JVC repair kit called the AV48WP74-65WP74 convergence repair kit from www.tvrepairworld.com which contains the ICs , resistors and the CD with instructions,

Sep 23, 2010 | JVC AV-56WP74 56" Rear Projection...

2 Answers

JVC AV56wp74 convergence. Resistor before ICs?


It's recommended to replace all the defective parts first because if you only replace the defective resistor, it might burnt again if the convergence IC is shorted internally. I would also suggest to measure the other low value resistors with multimeter.

Oct 30, 2009 | JVC AV-56WP74 56" Rear Projection...

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I have a JVC AV-56WP74 Rear Projection HDTV Ready Television...I had a problem with the convergence with dual pictures on screen...I replaced the convergence card with 110's.....This fixed the screen...


The STK392-110 are the stock ICs for your JVC. Chances are one or more of the feed resistors are bad. JVC TVs will usually have at least one bad resistor when the original ICs fail

Sep 06, 2009 | JVC AV-56WP74 56" Rear Projection...

1 Answer

JVC AV-56WP74 56 in rear projection convergence


If you remove the lower front panel where the speakers are then the small access panel you will see the convergence module right there in the front. It will have the two Convergence ICs attached to that heat sink. They are probably STK392-110. Then if you would like let me know and I will post a link where you can get the parts along with step by step instructions on how to do the repair.

Mar 28, 2008 | JVC AV-56WP74 56" Rear Projection...

1 Answer

Red Convergence on JVC AV- 65WP74


convergence amp ic bad
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/

Jan 28, 2008 | JVC AV-65WP74 Rear Projection Television

1 Answer

JVC projection tv


Mike, convergence adjustments are in your menu, usually under "video" settings. You have to adjust red & blue onto the green, when you`ve done it correctly the "cross" will be pure white, if you cannot move either of the colors left, right, & up, down then the convergence IC`s have failed and will have to be replaced, hope this answers your question, BMW Rider

Dec 30, 2007 | JVC AV-56WP74 56" Rear Projection...

2 Answers

JVC AV-56WP74 Problem


Yes, one of your convergence IC's have gone bad. They are located on the convergence board inside the tv and there are two of them. They are inexpensive and easy to replace if you know how to solder. Watch out for the JVC booby trap sensor on the dvi input card. Don't run the tv with the back panel off unless you have disconnected the DVI card from the main board. I would even cover the little sensor with black electrical tape. Then it is safe to work on the tv when it's open and on. Well safe for those who know what they are doing.

Jul 29, 2007 | JVC AV-56WP74 56" Rear Projection...

1 Answer

Problem with A JVC projection television


The convergence ICs probably have a cracked solder joint on the foil side of the circuit board. Re-flowing the the solder would help. I will always replace the convergence ICs when doing this job. The labor remains the same and you will have to pay a few extra bucks for the parts. To fix this yourself, you will need to be able to identify the two convergence ICs,in this model they are in the front of the set, have a basic knowledge of electronics and be able to use a soldering iron (Use a dielectric compound when changing any IC attached to a heat sink). You will also have to do an alignment through the service menu. To find a servicer in your area go to: http://maps.jvc.com/cAscList/ It's the JVC servicer locater site. Call the repair shop listed and ask them what they charge for a convergence job on your set. That should help you decide which direction to go. Hope this helps.

Apr 22, 2007 | JVC AV-56WP74 56" Rear Projection...

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