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I have a jvc av-48wp74 and it has a double color picture. it was under warr. till resent. they have repaired it 5 times befor for this problem. now out of warr. i would like to know if all it need is a colorwheel or something and where i can get one. thanks.

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Posted on Jan 02, 2017

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

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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likha
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SOURCE: I have the JVC AV-48wp74

ok! you have defctive convergence correction circuit! thats why the color is abnormally function!

Posted on Oct 21, 2007

  • 1 Answer

SOURCE: Sound but no image on JVC AV-48WP74

I have one with the same problem. I get a popping sound from speakers and a black screen. Any ideas what to check?

Posted on Mar 21, 2008

Slinteriors
  • 8617 Answers

SOURCE: JVC MODEL AV-48WP74

Convergence Issues Both STK392-110 ICs and possibly the 1.8 ohm and 1.5 ohm 1 watt convergence resistors as well. You can get replacement parts at the following link and they provide free instalation instructions
http://servicemanuals.vstore.ca/

Posted on Jun 22, 2008

  • 4234 Answers

SOURCE: i have a JVC I'ART projection hdmi 1080 model

If this is not resolved soon, the picture will start to bow from the top and bottom. This is a common rpoblem with CRT based projections sets and is in the convergence circuit. If you can solder, you may be able to resolve this yourself. Be aware that there are potentially dangerous high voltages present inside the set even when unplugged.

The problem can be as simple as poor solder connetions at the convergence ICs or defective ICs. In any case, these ICs are large and black and are marked STKxxx. If you can locate these, try resoldering the pins on the ICs. If that fails to resolve the probelm, replace the ICs.

Please keep us posted.

Thanks,
Dan

Posted on Nov 17, 2009

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1 Answer

JVC-AV48WPT74 picture colors are distorted, looks like 3-D image


The convergence ICs and feed resistors need to be replaced. You can get the repair kit for your specific model at the following link. The convergence repair kit contains the replacement parts and the step by step repair proceedure on CD. Very easy repair. Just look under the JVC repair kit category
http://www.tvrepairworld.com/

Jul 12, 2009 | JVC AV-48WP74 48" Rear Projection...

1 Answer

Jvc AV-48WP74 i no its a convergen issue but..


you can get the convergence repair kit at the following link which usually fixes that issue. The kit contains the parts and detailed instructions on CD of how to do the repair.
http://www.tvrepairkits.net/

Jul 07, 2009 | JVC AV-48WP74 48" Rear Projection...

1 Answer

Double image


In all probability you need to have the convergence amplifiers replaced. A very common problem with all projection sets.

Jun 02, 2009 | JVC AV-48WP74 48" Rear Projection...

1 Answer

Double picture


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...

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

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

Aug 31, 2008 | JVC AV-48WP74 48" Rear Projection...

1 Answer

JVC MODEL AV-48WP74


Convergence Issues Both STK392-110 ICs and possibly the 1.8 ohm and 1.5 ohm 1 watt convergence resistors as well. You can get replacement parts at the following link and they provide free instalation instructions
http://servicemanuals.vstore.ca/

Jun 20, 2008 | JVC AV-48WP74 48" Rear Projection...

1 Answer

Flashing power light on JVC 48W TV


Tri to remove the concergence pcb assy and start the Tv.If the TV is working just replace the convergance IC.

Feb 11, 2008 | JVC AV-48WP74 48" Rear Projection...

1 Answer

I have the JVC AV-48wp74


ok! you have defctive convergence correction circuit! thats why the color is abnormally function!

Oct 21, 2007 | JVC AV-48WP74 48" Rear Projection...

1 Answer

JVC 48WP74 HDTC rear projection


While it is true JVC tubes rarely fail, they can give trouble.
Another possible solution is bad screen / focus block......
Remove lower front grill panel and access board...Check for
smooth adjustment of RGB screen and focus.....let me know....T..

Sep 28, 2007 | JVC AV-48WP74 48" Rear Projection...

1 Answer

JVC AV-48WP74 48 in.


The convergence circuit needs repaired. I did the same job yesterday on this model. I not only replaced the convergence ICs, but, I had to replace a couple of resistors and a coil. The convergence alignment was minor after that.

Jan 22, 2007 | JVC AV-48WP30 48" Rear Projection...

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