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

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Color convergence color is all jumbled. I have a 4 year old jvc projection tv. ANy idea what needs to be replaced.

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RICKY-SOUNDS LIKE THE USUAL CONVERGENCE IC FAILURE.TRY LOOKING IN W/BACK OFF TV AND YOU'LL SEE COUPLE OF STK392-??? IC CHIPS,LOCATED ON A BIG METAL HEAT SINK.RETRIEVE THE EXACT PART # AND YOU CAN ORDER THEM AND INSTALL THEM YOURSELF IF YOU ARE GOOD AT SOLDERING ELECTRONIC PARTS,IF NOT BEST BET IS CALL AN EXPERIENCED JVC TECH.JOE TV

Posted on Nov 27, 2007

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My television has green and reddish lines throughout. I tried to adjust the color but no luck. Any ideas....


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

Oct 19, 2010 | JVC AV-48WP74 48" Rear Projection...

1 Answer

Picture is distorted and jumbled


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.

Convergence problems are very common on all Projection TV sets including Sony, Samsung, JVC, Philip Magnavox, Panasonic, Akai, Pioneer, Hitachi, Zenith, and others. You can get a convergenece repair kit from the link below.

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 - TV may also make a chirping noise.
Here are some photos of convergence problems.

49abec3.jpg
f0add3d.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.

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 solution

93a1209.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 know what you are doing. If you have never done this before we would advise calling a shop or if you want to do it yourself get a complete kit with instructions and support from www.TvRepairKits.com

May 12, 2010 | Hitachi 57F500 57" Rear Projection...

1 Answer

Picture is distorted and jumbled


Projection sets have two very common problems.

The first common problem is convergence


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 more information and a DIY convergenece repair kit with instructions from the link below.

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

*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

bb0cf99.pngYou 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

Mar 20, 2010 | Hitachi 57F500 57" 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

My tv jumps with red lines while watching. JVC


It sounds like the begining of as convergence problem or cold solder on convergence board - have a tech have alook

Sep 14, 2009 | JVC AV-48WP30 48" Rear Projection...

1 Answer

JVC I'Art Pro, Color Fade


sounds like two separate problems. color fade ?
green gun/band = bad convergence ic

Dec 18, 2007 | JVC AV-56WP30 56" Rear Projection...

1 Answer

Bluring at the top section of the TV


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/

Nov 11, 2007 | JVC AV-56WP30 56" Rear Projection...

1 Answer

Convergence


Color tubes are OK. Do not adjust. The issue at hand is called
convergence alignment.The repair involves-------
1)Pull chassis
2)Replace convergence IC's
3)Recheck alignment
work should be done by a skilled technician........T.

Oct 24, 2007 | Philips 60PP9202 60" Rear Projection...

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