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

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Red tube is projecting wide (convergence)

I have a jvc AV-48wp34/me not sure how closely it is related my red is projecting wide but not out of focus i covered the blue and green lenses and the red appears to be focused in the convergence alingment screen i can get the red to center but both the left and right sides of red are past the blue and green by inch help!

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Re: red tube is projecting wide (convergence) - JVC AV-48WP30 48" Rear Projection Television Projection Televisions

You need to replace the convergence IC's

Posted on Jun 08, 2006

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I have a JVC AV-48WP34 48" TV and I have a serious convergence problem... how can I solve this myself.. if I can

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 projection 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


You can see some more examples and find a fix using this link on Fixya

Aug 13, 2010 | Projection Televisions

1 Answer

How to remove the convergence panel from the JVC AV-48WP34 rear projection television

Try Website like You Tube type in convergence repair.Have many videos, people take out convergence board's ,view and find out.

Jul 25, 2010 | JVC AV-48WP30 48" Rear Projection...

1 Answer

JVC AV-48WP34 convergence issue

Chances are there are other resistors open

Jun 01, 2008 | JVC AV-48WP30 48" Rear Projection...

6 Answers

Suddenly, the screen shows double images on letters and numbers plus red/greenish like shadows on characters.

Youre convergence Ics need to be replaced. post the model number of your set and I will post the STK number that you need and a link where you can get new replacement ICs

May 25, 2008 | JVC AV-48WP30 48" Rear Projection...

1 Answer

Red and green sloop in tv

Yes it is, the convergence circuit needs repair, couple of large IC`s and possibly 2-3 resistors and you`ll be good as new, BMW Rider

Dec 30, 2007 | Projection Televisions

1 Answer

JVC Model No. AV-48WP34

Convergence amp ic bad

Nov 04, 2007 | JVC AV-56WP30 56" Rear Projection...

2 Answers

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.

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

1 Answer

Convergence green lines

Closely inspect the board for poor solder connections. Also someitmes the resistors will not show any signs of being bad even though they are open. It is wise to measure them but you need to disconnect the convergence yoke plugs to ge a good reading.

Sep 04, 2007 | JVC AV-48WP30 48" Rear Projection...

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