Question about JVC AV-48WP30 48" Rear Projection Television
I have a JVC AV-48WP30 48 in projection television, about 8 months ago the upper left and lower right hand corners were separating. The upper left corner was more red and the lower corner was more green. There were some shadowy lines running through the screen at the top as well. I ignored it and today when I turned it on, the screen was a flickering mess, it was bright green on the top and black on the bottom. The green looks like part of a circle. I am not sure if this is something I can repair myself, or if it is worth it. If I can repair it myself (I am very handy with solding and other stuff) what parts should I replace and what part numbers are they?
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....
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 itBowed flickering green screen, black on bottom - 69189a5.pngix the convergence your need to fix it. See below for a fix
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 Jun 06, 2010
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Posted on Jan 02, 2017
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