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

4 Answers

JVC AV-48WP30 started displaying vertical lines every inch

Recently, my JVC AV-48WP30 started displaying vertical lines every inch or so from the top to the bottom of the screen.

They're very, very narrow (about a "pixel" wide, if you will) and affect every input on the unit, including the DVI, component, TV (RF), and S-video inputs.

They "modulate", in that they change color, slightly, and intensity, almost like an amplifier or transistor is "clipping". Mostly, they appear white on dark backgrounds and vice versa, and the lines are not solid top-to bottom, but rather like some pixels are on and off in each line. They do not shift side to side at all, and always run full top to bottom.

They do _not_ appear on the onscreen menus, however, only on the tv signals.

I have _no_ idea what could be wrong, however, and no idea as to where to start looking. Any help would be most appreciated.

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  • 3 more comments 
  • paulene_roar Oct 09, 2008

    same thing here, only its 52 inch and the lines are every 1/4 inch or so... all the way across from top to bottom, on game, tv, dvd, just not on tv menu boxes.

  • jlyon342 Nov 06, 2008

    same exact problem. Is there a solution?

  • momu2 Feb 23, 2009

    I have the exact same problem, can anyone help!!

  • kayon912 Feb 26, 2009

    I have the sme problem, lines run vertically and much worse when picture is dark. lines change color red to green.

  • paulene_roar May 11, 2010

    OK, what is a hyer-board and how much roughly are we talking to get it fixed?? any ideas on who to take it to?? thanks!!

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It looks like theres a wave in the top of my screen on my jvc av-48wp30 not sure but i think it has something to do with the bulbs because the projection mirror wasfine and all wires seemed to be hooked up properly.. can you help? tell me where i can find the bulbs to replace them?

Posted on Oct 14, 2008

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I may be a convergence problem.

Here are some of the most common symptoms and example photos of a convergence problem


  • 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.
JVC AV-48WP30 started displaying vertical lines ev - 701cb04.jpg

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Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

If you can't move them in all directiJVC AV-48WP30 started displaying vertical lines ev - 2c07611.pngnvergence chips are bad and should be replaced. This is a common problem.

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.

Posted on Mar 21, 2009

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Jvc tv blurrey at bottom

Posted on Oct 13, 2008

Sounds like a hyer-board problem.

Posted on May 23, 2008

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This may not be the problem but its worth a try:
The plasma display screen is made of a matrix of elements connected to cables along the side and top. On your unit, some of these many, tiny connections are making contact intermittantly thus losing the elements in that area. These contacts are held in place with just pressure and if that is disturbed, you lose that line of elements. Try squeezing the cabinet of the TV on the outside at the top in the area of the loss and see if that makes a difference. May have to go inside and see if the contact assembly is disturbed or warped or something.

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