Question about Zenith R40W46 40" Rear Projection HDTV-Ready Television
The picture seems to be bowed at the top and bottem of the screen. this makes convergence impossible to line up. Im a clinical engineer that does x-ray repair and other electronic medical equipment but tv is not my forte' is this a hv problem?
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 it fails to fix the convergence your need to fix ipicture shrinking top & bottem - 69189a5.pngw 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
I have a philips magnavox and had two problems that I recently fixed using kits from www.TvRepairKits.com. I can't say enough about their kits and help. Without them I would have never been able to fix my TV set myself.
The first problem I had was the TV was looking 3D. After doing some homework I found out that this is a convergence problem. I bought a kit, followed the instructions, and to my amazement fixed it myself.
After building my confidence with the 1st repair I decided to get their CRT fluid kit. This kit fixes the dull video,red video, or bright/halo looking video. If you have a magmavox set that is more than 5 years old your tv has this problem already. It happens on every set. As before I bought the kit, followed the instructions, and now my video looks factory new. Once again I wanted to say thanks to the team at Tv Repair Kits for putting together kits that the average joe can use.
Posted on Aug 09, 2009
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