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

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Jvc convergence im having convergence problems it has red doble images

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  • honeyoats Dec 23, 2008

    I have the same red line that will not lineup with the others. I had the tv fixed about eight months ago and cost 400.00. Is this something that I can fix myself. Pleaseeeeeeeeeee help me

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1024x768 Normal 0 Convergence

When A REAR PROJECTION TV has coloured outlines or a 3D image the Convergence Circuits most likely need attention.

Replacing the output amplifiers (located within the Convergence IC's) allows the pictures to line up correctly, and no more color outlines.

This is the most common fault in all makes of rear projection TVs.

Some models of TV require major disassembly and considerable shop/manufacturer's support to repair because of their design that causes other power supply or vertical deflection problems. The poorly designed products require a "bench" repair that can typically cost from $350 t0 $700.

Some TVs are designed for on-site repair and have more reliable circuit design that does not usually cause damage to other parts of the TV when convergence chips fail. The ones that usually allow reliable on-site repair are JVC, Samsung and Hitachi.

It is normal to have some resistors in the circuit burn up or increase in value from the heat (from 2.2 ohms to 5 or 10 ohms). These resistors must be replaced with the right value or the chip may fail again.

This is not a simple repair like changing batteries or a fuse. Reading through the other posts shows many that try and end up with bigger problems.

Your JVC uses STK 392-110 IC's. Misinformed people replace the IC's with other "new and improved" IC's, like STK 392-150. These are devices with different characteristics and require different value resistors in the circuit. Replacing with the STK 392-150 will cause overheating of the resistors and a damaged IC.

If you are in Calgary, I can help. If not, get someone that has experience working on your JVC. My website is below with some costs and explanation.

calgaryconvergencerepair.weebly.com/convergence-explanation.html

Good Luck,

Easyab

Posted on Jul 07, 2008

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Posted on Jan 02, 2017

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1 Answer

MY SONY TV HAVE DOBLE PICTURE


projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Here are more details and solutions for both.

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....

  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
  • TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Here are some pics of convergence problems.


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Common Problem #2) CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

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TV set after fluid change

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69189a5.pngSOLUTION

You can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Jan 15, 2011 | Sony KP-43T70 43" Rear Projection...

1 Answer

II HAVE A JVC I ART PRO TV AND ITS SEEING DOBLE


this is a convergence ic problem , u need to replace the convergence ic take the front speaker grill off and the cover for the picture tube , stk392-110

Aug 25, 2010 | JVC Televison & Video

1 Answer

I HAVE A 48 JVC I ART PRO AND IT SEEING DOBLE.


Thats caused by failed convergence ICs and resistors. You can get the JVC AV48wp74 -AV65WP74 cnvergence repair kit from <A href="http://www.tvrepairworld.com">www.tvrepairworld.com</A> the kit contains the ICs , Resistoirs and the cd with repair instructions.

Aug 25, 2010 | JVC AV-56WP74 56" Rear Projection...

1 Answer

Jvc 52 rear orijection top has doulbe image in


Ur convergence is dead.Must know how to solders?Must replaced 2 convergence ICS and some or all it resistors.Tries websites Tv repair World.com,Tvrepairkits.com to buy a convergence to repair it ur self.The shop will cost u $300 for parts and labors.

Mar 14, 2010 | JVC HD-52Z575 52" Rear Projection...

1 Answer

My tv needs to be converged but i can't


the left and right volume buttons are what move the convergence horizontally, so if they dont move you will need to replace the convergence ICs .if you need more info I will need the model number of your JVC

Mar 13, 2009 | JVC Televison & Video

1 Answer

Red ghost in the screen


you can get the KP46WT510 convergence repair kit which will usually repair that issue at the following link the repair kit contains both ICs six pico fuses and 4 of the feed resistors also includes instructions with pictures on how to do the repair.
http://servicemanuals.vstore.ca/

Feb 09, 2009 | Sony KP-46WT510 46" Rear Projection HDTV

1 Answer

Red shadow on all images


you will need to cahnge the Convergence Ics for sure and possibly the feed resistors. You will need two STK392-110 Convergence ICs and 1 JVC convergence resistor Kit #1 you can get the parts at the following link with free installation instructions with pictures. Heres the link.
http://servicemanuals.vstore.ca/

Jan 22, 2009 | JVC AV-48WP74 48" Rear Projection...

1 Answer

DOBLE IMAGE


THE CONVERGENCE DRIVER CHIPS NEED REPLACED. CHECKSUPPLY SAFETY RES ARE OK AFTER REPLACEING STKs RESET CONVERGENCE. CHANCE BOTH STKs.

Sep 09, 2008 | Toshiba 43H72 43" Rear Projection...

1 Answer

Convergence problem on JVC


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
http://www.hdtvoice.com/voice/showthread.php?t=28929

Aug 05, 2007 | JVC AV-56WP30 56" Rear Projection...

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