Question about JVC AV-48WP74 48" Rear Projection HDTV-Ready Television

3 Answers

JVC MODEL # AV-48WP74 48 IN. BIGSCREEN TV.

I HAVE A JVC AV-48WP74 48 IN. TV AND THE CONVERGENCE IS CREATING A DOULBLE PITURE WITH THE RED COLOR IF I TURN THE RED LAMP ALL THE WAY DOWN IT FIXES THE DOULBLE PITURE ,BUT THEN I HAVE NO RED IN THE COLOR DOES ANYBODY NO HOW TO FIX IT.SUPER FOCUS WONT FIX IT AND THE MANUAL CONVERGENCE ON THE REMOTE CONTROL WONT MOVE ANYTHING ANYMORE.

Posted by RONNIE DELONG on

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  • kingsnake Jan 13, 2008

    I HAVE A JVC AV-48WP74 48 IN. TV AND THE CONVERGENCE IS CREATING A DOULBLE
    PITURE WITH THE RED COLOR IF I TURN THE RED LAMP ALL THE WAY DOWN IT FIXES THE
    DOULBLE PITURE ,BUT THEN I HAVE NO RED IN THE COLOR .SUPER FOCUS WONT FIX IT AND THE MANUAL CONVERGENCE ON THE REMOTE CONTROL WONT
    MOVE ANYTHING ANYMORE. HOW MUCH DOES IT COST TO CHANGE THE CONVERGENCE CHIP 300.00 ? PLEASE email me at [email protected] thank you!

  • jimm102665 Feb 25, 2008

    yes i have the same prob but the green looks like mascarea on them to

  • burkhart512 Sep 21, 2008

    mine is doing the same thing the red is bad. THIRD TIME IN 5 YRS. would not suggest buying one of these!!!!!!!!! HELP ME PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!!

  • mzakins34 Sep 25, 2008

    the picture is showing double it s humming and the screen is not fitting the tv so what is wrong with it.

  • Anonymous Mar 21, 2014

    need to know how to turn off close caption for this model without the remote

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Anonymous

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I had a problem with my TV colors not lining up. One day I turned it on and the green was out of wack. I checked this message board and replaced the STK chips, bad soldering and all led to me just giving up on that and buying a whole new Convergence Board ($185). I just plugged this in and though now my Green lines up okay, my red is out of whack. Is there something I am doing wrong? Can anyone help me? Did i miss a step? Frustrated......Bruce

Posted on Aug 18, 2007

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Anonymous

Have same brand but 56 inch, did the same thing with moving lamp ,it was ok until the others colors did the same thing only way to fix is to have local tv repair to change convergence chip 300.00

Posted on Jul 29, 2007

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Wow u guys are lucky.i have the same tv and it wont turn on.it just got turned off next day wouldnt turn on.any ideas?

Posted on Aug 23, 2010

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1 Answer

Hi i have a jvc tv model av-56wp30 it has a red line in the corner of the tv what seem to be the problem and will it cost me alot of money to fix?


Ur tv have a problems known as a convergence problems,it dead.The tv have colors lines R,B,G mis alignments,have colors shadows pictures or 3D picture look alike?The tv convergence board it is dead.The tv convergence board,must require repalcing 2 STK convergence ICS and some or all of it resistors too.The tv convergence board is fix,will solved ur tv picture convergence problems.The shop,will cost u like $300-350 for parts and labors.

Dec 04, 2010 | JVC AV-56WP30 56" Rear Projection...

1 Answer

My JVC wont converge the red lines so half my screen is good while the other has red lines. What should I do? Thanks A lot


The tv 100% have a convergence problems,it dead.Tv have colors lines R,G,B mis alignments,have colors picture shadows or 3D pictures look alike?The tv convergence board have dead 2 STK convergence ICS and some or all of it resistors are dead too.These parts on the tv convergence board,must be replaced to solved the tv convergence picture problems.The shop,will cost u like $300-350 for parts and labors.

Nov 20, 2010 | JVC AV-48WP30 48" Rear Projection...

1 Answer

Jvc48av-wp30 problem with red lines up and down on tv


The 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 convergence board have dead 2 STK convergence ICS and some or all it resistors are dead 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 20, 2010 | JVC AV-48WP30 48" Rear Projection...

1 Answer

My tv is a jvc av-56wp74 it looks like 3Dwithout the glasses the colors dont line up


The most likely cause is shorted convergence chips and possibly a few pico fuses.

These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony,Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer Hitachi,Mitsubishi,Zenith and others.
You can get a convergenece repair kit with instructions from the links below.

Here are some of the most common problems with these sets...

Problem #1) Convergence

Yours may have one or more of the following symptoms...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2
Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture

You can see some more examples and find a fix herebb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Apr 04, 2010 | JVC AV-56WP74 56" Rear Projection...

1 Answer

JVC AV-56WP74 Colors quit working or went out of balance.


Guns or CRT are probably ok. Your TV needs a convergence IC STK392-120 replacement. Lamp are used on LCD and DLP rear projection TV's. Color wheel are for DLP's. :)

Dec 26, 2009 | JVC Televison & Video

1 Answer

I have jvc-56wp30 the color convergience is way off like a 3d picture. it will not converge.


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 photos of convergence problems.

42d3683.jpg

7859b01.jpg

e87380c.jpg
Here is a quick test....

Using your original remote go-to the settings menu then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move RED and BLUE in all directions - up, down, left, and right. And you should be able to get the grid straight.

If you can't move them in all directions or cant move them far enough your convergence chips are bad and should be replaced. This is a common problem.

Note: If you TV has as flash focus or magic focus button only try pressing the button. If it fails to fix the convergence your need to fix it. See below for a fix

69189a5.pngCONVERGENCE SOLUTION

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

Sep 24, 2009 | JVC AV-56WP30 56" Rear Projection...

1 Answer

Convergence on jvc av-56wp30


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 projeciton 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 photos of convergence problems.

42d3683.jpg

7859b01.jpg

e87380c.jpg
Here is a quick test....

Using your original remote go-to the settings menu then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move RED and BLUE in all directions - up, down, left, and right. And you should be able to get the grid straight.

If you can't move them in all directions or cant move them far enough your convergence chips are bad and should be replaced. This is a common problem.

Note: If you TV has as flash focus or magic focus button only try pressing the button. If it fails to fix the convergence your need to fix it. See below for a fix

69189a5.pngCONVERGENCE SOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses.
This is a a fairly easy DIY job if you are handy and can follow directions. You can get complete repair kits from TvRepairKits.com or click here. They have put together DIY repair kits that include the OEM parts and step by step photo instructions for each repair. If you are not handy or can't follow directions we would suggest calling a shop.

Jan 27, 2009 | JVC AV-56WP30 56" Rear Projection...

1 Answer

TV displays red on screen


You have two convergence amps that need to be replaced on the convergence board.This is a very common problem with these units.The part # are STK392-110 but I would upgrade to a STK392-120 or a STK392-150.Also there may be a couple of low ohm resistors that need replacing.Depending on your electronics experience this job is pretty much a straight forward soldering job that requires a certain amount of knowlege.These parts can be obtained from partsstore.com.I as a technician charge between$185.00 in shop and $250.00 inhome for this repair.It is well worth it as this particular chassis really did`nt hve very many problems, and once fixed you will have a like new picture.Good luck!!

Dec 18, 2008 | JVC AV-56WP30 56" Rear Projection...

1 Answer

Av-48wp30


If the convergence Ics and resistors are good its most likely related to the velocity boards that are attached to the Red CRT convergence yoke. Its the small board about half way up the neck of the CRT. If you need one let me know as I have a source for JVC boards for that model.

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

1 Answer

Ctc 195 series rear projection T.V. piture quality


Can you post a picture of what the video is doing? It shounds like a pincushion problem, but it may be convergence amp as well. A picture could clarify it for me so I would know which direction to assist you in.

Feb 23, 2008 | JVC AV-56WP74 56" Rear Projection...

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