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

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Jvc rear projection problem

One day we turned our tv on and the red was not lined up with the rest of the picture , it was like a red ghost of all the images. also the red was a bit curved at top and bottom. we also started getting a black fuzzy bar across the bottom, like it was eating up or picture or something. we took it to a repair shop and they said it is leaking?? and got on the mother board and is frying it. does this make sense to you? im trying to figure out if they are lying to me or not so let me know. they said it would be about 1,000 dollars to fix. and advice would be appreciated. thanks

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  • cards7 Feb 26, 2008

    thanks bobby i appreciate the advice :)

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The problem you are having is the convergance amplifiers have failed there may be some resistors and fuses blown also.
now, this can be caused by coolant leaking from the guns shorting out the board.you may investigate this yourself by unplugging the set open the back and check for fluid leaks around and under the CRTs and on the main board. if it is present don't touch this fluid (eytholene glycol sorta the same stuff you use in your car coolant). if it is there then yes you are looking at a high cost of repair, but if not your looking around $350.00 or so.

Posted on Feb 26, 2008

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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

Ghosting of the image


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,Pioneer2_bing.gif 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.png http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Sep 07, 2009 | Mitsubishi WS-55511 55" Rear Projection...

1 Answer

Red and blue ghosting,


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,Pioneer2_bing.gif 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.png http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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1 Answer

Red horizontal lines


Hi,
Misaligned red lines in your TV is due to failure of Convergence Out ICs and requires replacement.

Let me know if you are familiar with TV repair to provide you part number info OR call local TV tech to fix the TV.
Thanks.

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1 Answer

We are getting ghost images and the color is not correct


I have red concave lines going across the screen, plus wording appears double like a ghosting effect, this is ongoing from the time the tv is turned on until it is turned off. This started 3 days ago. Is it time for a new tv, its 9 or 10 yrs old now.

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1 Answer

Color ghosting or shadows


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,Pioneer2_bing.gif 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.png http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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1 Answer

Ghosting in red ,blue & green


Sounds like an allinment problem with the color projection you can allin yourself via small screws on color tubes in rear. but be careful as tv needs to be on to do it.

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1 Answer

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You need two STK392-110 Convergence ICs. You can get repalcements at the following link, and they will provide free instalation instructions with picture so you can do the job yourself. Heres the link.
http://servicemanuals.vstore.ca/

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1 Answer

Ghosts on my tv


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hope this helps
wg

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1 Answer

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Red convergence IC is bad...replace both STK IC for durable,
long-lasting repair..............................T.

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