Question about JVC AV-48WP30 48" Rear Projection Television

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Red rainbow on top half of screen and double images

Model # JVC AV-48WP74
Just started to happen , Set is about 3-4 years old and was bought at a rental company. I thought it was a DISH NETWORK PROBLEM since i "bundled".
Is this something i can repair myself ?
Also the Image is slightly listing to the left ( picture is not square to veiwing screen.

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  • 213 Answers

Ch the stk 392-120 try to set the conv.or try to auto set conv. if work then ok if not work you and stk392-120 or 150 you need a sevice man for that.

Posted on Jun 02, 2009

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Two lines run thru causing overlay or double vision,example word is white with red showing behind av-48wp74 email howardselectric@hughes.net


This is a common problem. Its called a convergence failure.

Problem #1) Convergence

Symptoms:

  • Screen Looks 3D
  • Colors wont align
  • Screen may look distorted
Problem #2 CRT Fluid has clouded over. Symtoms
  • Dull looking video
  • White looking video
  • Halos around objects
  • Red/Orange looking video

You can see some examples and find a fix here...

bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Feb 20, 2010 | JVC AV-48WP74 48" Rear Projection...

1 Answer

Seeing double


You need to replace the convergence board in your tv .


Also you have mentioned it is 5 years old so its time to replace it .
But it will not be cost effective one .


SAM ANDERSON

Sep 21, 2008 | JVC AV-48WP74 48" Rear Projection...

2 Answers

I have a JVC I'ART projection hdmi 1080 model #av-48wp74 .it is 6 yrs old and it started to get a double image [ghost]and the colors are off. i tried the auto convergance but to no avail???


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

Oct 05, 2009 | JVC AV-48WP74 48" Rear Projection...

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

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

Red shadow on all images


you will need to cahnge the Convergence Ics for sure and possibly the feed resistors. You will need two STK392-110 Convergence ICs and 1 JVC convergence resistor Kit #1 you can get the parts at the following link with free installation instructions with pictures. Heres the link.
http://servicemanuals.vstore.ca/

Jan 22, 2009 | JVC AV-48WP74 48" Rear Projection...

1 Answer

Seeing double


need to replace the convergence ICs and possibly the convergence resitors . You need STK392-110 ICs you can get the ICs and the convergence resiistor kit for your model at the following link with free instalation instructions
http://servicemanuals.vstore.ca/

Jul 28, 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

Convergence-red off set


The issue with your set is convergence mis-alignment caused
by a defective IC....change both STK392-110...mounted on
large heatsinks....check nearby resistors for over-heating.....
Moderate tech skills necessary......................T.

Jan 27, 2008 | 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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