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

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JVC- red wave on screen and letters doubled

Hello. I ahve a red wave going across my screen and the letters are doubled. Can you help me with answers to fix this problem? Thanks

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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 projeciton 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.

JVC- red wave on screen and letters doubled - 42d3683.jpg

7859b01.jpJVC- red wave on screen and letters doubled - e87380c.jpg_mi

e87380c.jpg
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 toJVC- red wave on screen and letters doubled - 69189a5.pngnvergence your need to fix it. See below for a fix

69189a5.pngCONVERGENCE SOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses.
This is a a fairly easy DIY job if you are handy and can follow directions. You can get complete repair kits from TvRepairKits.com or click here. They have put together DIY repair kits that include the OEM parts and step by step photo instructions for each repair. If you are not handy or can't follow directions we would suggest calling a shop.

Posted on Jul 03, 2010

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  • 40 Answers

Convergence ic's they align the 3 colors red, green and blue to make a full picture.. when they go out or when 1 does it throws the colors out in the manner you have described.. these are what normal ic's look like.. yours may be different numbers http://www.fixya.com/uploads/images/4790134.jpg

Posted on Mar 13, 2009

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http://servicemanuals.vstore.ca/

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Good Day, wars;
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