JVC AV48WP34 Having problem with red bowing lines in picture at the top and bottom of screen.Need in detail what to do and how to do it can not afford a costly repair.

2 more comments
darrinva Dec 21, 2007

same problem same problem
ronald007 Feb 12, 2008

same problem red lines bowing across top of screen and red lines not lined up anywhere was told by repair shop that it is common problem and that i need to replace convergance board @$400.00
Anonymous Jun 05, 2008

I have the same problem, what is the solution?
otisk Jul 02, 2008

same probelm same probelm

3 Answers

Anonymous

I have a JVC AV-48WP30, and I had a lot of issues w/ red lines appearing on my screen. If your problem is like mine, then you have to find the video processor, which is a small, squarish metal box on the main board right behind where the a/v plugs are on the back, and jiggle it a little bit, maybe stick a zip tie on there. That always made my lines disappear.

Posted on Nov 18, 2007

valle34

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Hi guys i had the same problem and i fixed myself. All you have to do is to replace the convergence ICs . You need to know how to use a soldering iron. You have to open the TV from the front not the rear because the convergence board is accessible from the front of the tv. The board is the one that has two big black integrated circuits with letters STK and a numbers you cannot miss it there is also some resistor on the front of the ics those have to be replaced also. The board is easy to remove; just draw on a paper how is connected and remove it. You will not spend more than 50 dollars in parts i did mine with 35 dollars. My advice is to remove the board and have someone with electronics knowledge to replace the parts.

Posted on Nov 05, 2008

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I hav the same model, I cannot get my JVC model AV 48wp34 to turn on. I've unplugged it from the power source and replugged it but nothing happens. The tv is about 5 years old and has worked perfectly

Posted on Dec 08, 2009

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1answer

I have a HCN4727w samsung. Red/green shadowing. Bowed image

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 or bowed
*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 using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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Jan 17, 2010 • Samsung HCN4226W 42" Rear Projection...

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Screen is bowed on top and bottom.

Projection sets have two very common problems outlined below.

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. The TV can also shut down when the convergence starts to fail.

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, RCA and others.

You can more info and a DIY convergenece repair kit with instructions from TV Repair Kits using the link at the end of this article.

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

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped or bowed
*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

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

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Jul 13, 2009 • Samsung PCL5415R TV

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Bowing of picture at top and bottom towards center.

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

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Jul 12, 2009 • RCA D52W20 52" Rear Projection HDTV-Ready...

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Cheap Fix?

I will strongly advise you to replace the two STK392-120 as a pair. and this will cure your bowing picture problem. You may need to re-converge your set. best of luck.

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Nov 05, 2008 • JVC AV-48WP30 48" Rear Projection...

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Tv is messed up

I got a question.

Do you have any stereo speakers anywhere near your television?

This sounds like something a magnetic field could cause from speakers being too close to the tv.

If so try to relocate them and see if the problem goes away.

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Jun 15, 2008 • Hitachi 57SWX20B 57" Rear Projection...

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Red bow on top and bottom of 61dx01b

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.

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

CONVERGENCE 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.

Read full answer

May 21, 2008 • Samsung PCL5415RB 54" Rear Projection...

0helpful

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Convergence bowed at top and bottom

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

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

Read full answer

May 06, 2008 • RCA P46924 46" Rear Projection Television

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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/

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

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Bowing red lines at top and bottom of screen

Try this, it might be just the thing:http://www.techlore.com/article/15929/Fixing-My-Own-TV/?textpage=3

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Sep 19, 2007 • JVC AV-48WP30 48" Rear Projection...

1helpful

2answers

JVC 48WP34

More than likely you need to replace your IC's on your convergence board. Im not entirely sure on this model, but it's probably STK392-110. There are a lot of people that recommend that you replace them with STK392-150 to ensure a longer life.

Read full answer

Sep 11, 2007 • JVC AV-48WP30 48" Rear Projection...