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

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My picture is divided into primary colors almost like 3d

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  • JVC Master
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If 3d looking it is a convergence problem--this model should use 2 of the STK-392-110 CONVERGENCE CHIPS---both and any bad resistors around them need to be replaced and the set adjusted.

Can you do this repair yourself if I tell you what is involved?

You can buy a pair of the chips for about 12 dollars plus shipping on Ebay---it does involve being able to get at them and soldering(each chip has 18 pins..)


Let me know if you think you can do it and I will tell you how to proceed--if you cannot do it I can tell you what to do to get it fixed--it is a fairly easy repair on the set you have.....

I am here to help and if you have any questions or need advice reply to this posting here and I will assist you.

REGARDS, SD TECH

Posted on Oct 04, 2009

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  • Master
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There is a chip that frequently goes bad in these sets .. its a STK392-110 IC .. unfortunately its soldered in and has to be mounted on a heat sink .. that chip is responsible for "convergence" of the 3 colors on the screen .. when it goes bad the screen colors seperate ... its an expensive part from JVC but there are a lot less expensive substitutes .. the job of replacing that chip would be beyond most people .. unless you are handy with things like that ... you might also try a fan to keep the chip cool .. you might get a little more life out of it ...

Posted on Oct 04, 2009

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1 Answer

Color on tv is distorded


I need to know model and a photo of picture (you can post here) or a better description of the issue--for example;"Picture looks 3d but is not a 3d set" "colors are skewed"

Colors look like this photo

12_14_2012_1_41_18_am.jpg12_14_2012_1_41_38_am.jpg

Dec 13, 2012 | Mitsubishi Televison & Video

1 Answer

Picture looks 3d colors not lining up


The tv have a problems known as a convergence picture problems.That why ur tv colors lines R,G,B are mis alignments,have colors shadow pictures or have 3D pictures look alike?The tv convergence board it is dead.Tv Convergence board must have it parts like 2 STK convergence ICS and some or all of resistors to be replace too.To fixed the tv convergence board to solved tv picture convergence problems.The tvs shops will cost u like $300-350 for parts and labors.

Aug 09, 2011 | Panasonic PT-53WX54 53" Rear Projection...

1 Answer

I have a Mitsubishi projection television, It was given to me. It worked fine until two weeks after i brought it to my home. The colors of the picture seemed to divide into three lines, like looking at a...


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. Repair kits with instructions are also avail from www.TvRepairKits.com

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.


7859b01.jpg

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69189a5.pngSOLUTION #1

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

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

Dec 02, 2010 | Sony KP-51WS500 51" Rear Projection...

1 Answer

The picture looks 3D and kind of curving in


The tv have a problems known as a convergence problems,it dead.The tv have colors lines R,G,B mis alignments,have pictures colors shadows or have a 3D pictures look alike?The tv convergence board have dead 2 STK convergence ICS and some or all of it resistors too.These parts on the tv convergence board,must be replaced to solved the tv convergence pictures problems.The shop,will cost u like $300-350 for parts and labors.

Nov 23, 2010 | Sony KP-57WS510 57" Rear Projection HDTV

1 Answer

Screen looks like it is in 3D colors are seperated.


Tv have a problems known as a convergence problems,it dead.The tv have colors lines R,G,B mis alignments,have colors shadows pictures or 3D pictures look alike?The tv convergnce board have dead 2 STK convergence ICS and some or all of it resistors too.These parts on the tv convergence board,must be replaced to solved the tv picture convergence problems.The shop,will cost u like $300-350 for parts and labors.

Nov 22, 2010 | Toshiba Televison & Video

1 Answer

I have an R52WH74..my screen keeps popping in and out with a 3d picture...i tried to manual converge it but it won't let me move the cross left or right..help me please


This rca chasis 222 set has the cpnvergence divided among 3 diffrent circuit boards. how often does it pop in and out? is this all of the colors or just one. is the picture curved in at top and bottom when this happens. intermitant problems are characteristic of a faulty connection or a componet aproaching failure. if the picture is curved in then i suspect it could be related to the convergence power board. if it just one color it might be the convergence amp board. i am here to help so just let me know and i will do my best to see what i can do

Nov 05, 2010 | RCA R52WH73 Projection Television

2 Answers

I want to know the perfect color settings for the th-42px80u


Hi,

The Settings are :-

-Picture menu Picture mode: Custom
Picture: +80
Brightness: +60
Color: +44
Tint: -8
Sharpness: 0
Color temp: Warm
Color management: On
x.v.Color: Off
Zoom adjust: [grayed out]

-Advanced picture submenu
Video NR: On
3D Y/C filter: [grayed out]
Color matrix: [grayed out]
MPEG NR: [grayed out]
Black level: Light



Let me know, if needed further assistance.


Hope i helped you.


Thanks for using ' Fixya ' and have a nice day!!


Mar 10, 2010 | Panasonic Viera TH-42PX80U Plasma TV

1 Answer

3d like picture, 3 colors bending across screen. convergence option gone from menu


There are bad solder connections on the flyback transformer and fuse #FL231 is open. Pretty hard to repair this yourself.

May 26, 2009 | RCA R56WH76 Projection Television

1 Answer

Picture is all distorted ,colors dont match up need 3d glasses to watch


HI, this is basic convergence failure. the convergence board controls the RGB stream and , if its malfunctioning or, the convergence chip set is damaged, it will distort the entire display and the colors will not be regulated correctly as you are experiencing at this time.

simply replacing the convergence board in this unit will fix your issue.

May 18, 2009 | RCA Televison & Video

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