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

1 Answer

How can I fix my 56" widescreen jvc

The picture has an arc on the top and bottom of the screen.I tried the convergence but it didnt effect it at all and everything seems to have a shadow.it is a rear pojection.thanks for your time.you can send the answer to cjohnbrenda@aol.com.

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  • plumberbobo Jan 30, 2008

    yes i still need a salution.

  • dyoung694 Feb 24, 2008

    When I do a manual convergence there is a half mooned shape line just in the upper left hand corner where the lines are not converged. The rest of the screen the lines are converged.

  • Anonymous Dec 16, 2008

    my color is ok but in wide screen or when there are words on the screen it has a fisheye look? ne ideas?

  • Anonymous Dec 23, 2008

    I have a arc in the left corner and i tried to re focus but it just not working

  • Anonymous Dec 24, 2008

    I have the same problem . What kind of iC chip is it(part number), and where can i purchase this. Also, what pc board is it found on.

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Ok. let start this process. are the colors seperated? RED GREEN BLUE Then this is suspect will be a convegence problem. which 85 percent of the time is what is know as convergence ic chip failure. a electronic part replacment. are you a tech or know how to solder. any experince would be helpful but i would have to admit this really is not a job for non techs there are setup issues. at our shop the cost of such a repair averag 135 to 250

Posted on Feb 22, 2008

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Posted on Jan 02, 2017

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1 Answer

The picture is showing multiple images with red, green and blue rainbow effect. The picture is also bowed on the top and bottom


This is whats called a convergence failure. You will need to call in a repair shop or goto sites like www.TvRepairKits.com hthat ave the parts to fix this yourself. Its a common failure on projection TV sets.

Aug 07, 2011 | JVC AV-56WP74 56" Rear Projection...

1 Answer

Red and green arcs, 3-D effect


Convergence is dead.Know how to solders?Replaced 2 Convergence ICS and all it resistors.Tries Tv repair World.com,Tvrepairkits.com for the convergence kit.The shop will cost u $300 for parts and labors.

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JVC TV Convergence 3-D Problem


This is not a reset problem. Either the solder connections on the convergence ICs are poor or the ICs themselves have beccome defective. If you cvan solder, try resoldering the pins on the convergence ICs. If that fails to resolve the problem, you will need to replace the ICs. These are large black ICs attached to a heat sink and should be marked STKxxx.

Dan

Nov 28, 2008 | JVC AV-48WP30 48" Rear Projection...

1 Answer

Jvc projection tv


try this site http://www.sharefx.net/index.php

Jul 16, 2008 | JVC AV-56WP74 56" Rear Projection...

1 Answer

JVC AV-56WP74 56 in. Rear projection blurred image


Check that the 3 output plugs are in the right sockets (Red, Blue, Green) There is usually a felt pen colored mark on a white tape on the plug in wires. The Board sockets are marked Red, Green, Blue.

Easyab

Jun 20, 2008 | JVC AV-56WP74 56" Rear Projection...

1 Answer

Convergence issue with blue


You need to replace the convergence Ics located up front behind the speaker grille numbers STK392-110 you can get replacements at the following link and they provide free tech support and instalation instructions with pictures. heres the link.
http://servicemanuals.vstore.ca/

May 06, 2008 | JVC AV-56WP74 56" Rear Projection...

1 Answer

56" jvc projection


You need to re-solder the circuit board that contains the STK convergence modules. They're on the center circuit board attached to an aluminum heat sink that's about 8" long and 6" tall, about dead center in the circuit board. You may be able to recreate the problem (hour glass effect) by gently moving the heat sink (which the modules are connected to). This gives the hour glass effect on the picture and the advanced convergence screen. This is an indication that the modules pins aren't solidly connected (meaning soldered) properly. Remove the circuit board and clean the old solder off & resolder the modules pins to the circuit board reconnected the board and then retest by again pushing on the heat sink. This is a caused by a minimum effort (a.k.a. minimum cost) solder job, probably done in some 3rd world sweat shop. The "factory" job was good enough for 3-4 years but the heat (and these modules do create a lot of heat) and stress created from repeated use eventually takes it's toll, weakens the pin connections and our problem occurs. take the appropriate cautions working around the high voltage of the set & use a non-conduting piece of wood to push the heat sink when we doing tests. Best of luck, hope ya fix it.

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

1 Answer

56"wide screen


Have you tried to adjust the convergence? If you can't get them to line up then you may need to replace the ICs.

Jan 30, 2008 | JVC AV-56WP74 56" Rear Projection...

2 Answers

Screen is bowed (top and bottom) Color has a green and purple tint?


Your convergence has failed and needs to be repaired. 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. You can call in a repair shop or you can get the parts and instructions from www.TvRepairKits.com and do the repair yourself. Its a fairly easy DIY fix.
Here is an example video


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

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