Question about Zenith R50W46 50" Rear Projection Television

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I want to fix the convergence of a zenith r50w46

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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 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

i want to fix the - fbd5822.jpg



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

Posted on Aug 28, 2010


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Posted on Jan 02, 2017


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How to fix a Zenith Projection TV. Could it be the bulb needs replaced? Is this something I can do myself?

The whole service manual is here:
But this is something that you might want to reconsider. The availability of parts could be an issue. The smell could be the ballast or the bulb got really hot and went out. The repair process involves troubleshooting with special meters etc. You may be able to spot something that burned out though.

Dec 22, 2015 | Zenith R50W46 50" Rear Projection...

3 Answers

Zenith R50W46

you have bad convergance ic that need to be replaced.

Dec 18, 2007 | Zenith R50W46 50" Rear Projection...

1 Answer

Is there a reset key to fix convergence.

This is a common problem. Its called a convergence failure. You can get all the parts from


  • Screen Looks 3D
  • Colors wont align
  • Screen may look distorted

You can see some examples and find a fix here...

Feb 06, 2011 | Zenith R50W46 50" Rear Projection...

1 Answer

I need a diogram for this tv to see trouble with power on button

There is a manual here. It requires payment, but most service manuals do. I've purchased several from this site with no trouble.

Please use the voting system if this helped.

Jan 08, 2011 | Zenith R50W46 50" Rear Projection...

1 Answer

I am having convergence problems and need to know if there is really a difference with Sanyo and Sanken STK IC convergence chips?

Just the name, Sanyo quit making the STK series several years ago Sanken, Toshiba and Mitsubishi all have good versions of the STK series.

Aug 25, 2010 | Zenith R50W46 50" Rear Projection...

1 Answer

Colors are misaligned on my zeneth r50w46 and the auto convergence option did not solve the problem. the red droops off on the left side of the screen and the green droops across the top center.

Your convergence IC's are out and this is why you can't use the auto or manual convergence. This type of repair done at a verified Zenith service shop most likely will run you $400.00 to $500.00 dollars. However, if you have some electronic skills and are familiar with soldering and de-soldering, you can do the repair yourself for around $85.00 to $100.00. You will need to buy a convergence repair kit which has all the parts you need and gives pretty straight forward instructions. Plus, if you run into trouble, they have online support. Here is the link for the convergence kit.

This is not really a hard task to do. It usually takes about 2 to 3 hours from start to finish if you take your time and make sure you follow the instructions to the letter.

Again, if you don't have any sort of electronic skills, it is always better to have the unit serviced by a professional.

Good luck!

Apr 14, 2010 | Zenith R50W46 50" Rear Projection...

1 Answer


you can get the convergence repair kit to repair that problem at this link. The kit contains both ICs and the feed resistors, and also has instructions so you can do the repair yourself.

Feb 02, 2009 | Zenith R57W46 57" Rear Projection...

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