Question about Zenith IQB50M90W 50" Rear Projection Television

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PINK AND GREEN COLORS ON BOTTOM OF PROJECTION TV

I have a Zenith projection tv, i get like a little rainbow at bottom of screen first color is pink and the other green, if there is text on the tv it is almost looking at the wording twice like the colors are not lined up. A guy that works on tv's but did not look at mine thought that it needed a convergence panel which was like $300 superbowl is coming and if its an easier and cheaper fix than that i can do it myself, the model is a R57W46, it is located by a door and the door may have hit it, tv is approximately 5yrs old my email is smitdoogg1918@yahoo.com
thank you

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I'm not really sure on an exact fix for this, but I'm told that these are the symptoms of bad convergence module(s). My set is the same model no. and has the same symptoms. I was looking to see if I could find the exact part no. of the stk ic modules. I'm told that they are approximately $30 to $50 and are not impossible to change out if you have decent soldering skills. The normal repair charge seems to be about $600. Good luck. It looks as tho I may have to just give up and open the back and get the part no.s from the chips

Posted on Jan 31, 2008

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Posted on Jan 02, 2017

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The picture all of a sudden became blurred , color convergence is not aligned and there is a pink wave at the top left of the screen and a green wave at the bottom of the screen. When the color is adjusted...


Tv have convergence problems,it dead.Colors lines R,G,B don't aligned.The tv convergence board is dead.The 2 STK convergence ICS and some or all it resistors are dead,these parts must be replaced to solved the tv pictures covergence problems.The shop,will cost u $300-350 for parts and labors.

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Color seperation and red drooping line


You have defective Convergence IC's. It's best to have a service company verify and do the repair if you wish. Normally runs about $250.00

Jul 14, 2009 | Zenith R45W46 45" Rear Projection...

1 Answer

Sometimes I get a rainbow on the bottom of the screen.


Your TV most likely has a convergence failure. ( common 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.
Here are some photos of convergence problems.

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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 directions your convergence chips are bad and should be replaced. This is a common problem.

0667c5f.pngSOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses. Its a fairly easy DIY job or you can call in a pro. If you want to do the repair yourself check the site www.TvRepairKits.com. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.

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ur tv needs to be degaused using a degausing wand or ring. mos def needs to be taken to a professional to be done.

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Projection TV sets have two very common problems listed below.

Problem #1) Convergence


These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony, Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer, Hitachi,Mitsubishi,Zenith and others.
You can get more information and a DIY convergenece repair kit with instructions from the link below.

Here are some of the most common problems with these sets...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2 - Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
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bb0cf99.pngYou can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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1 Answer

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If you have the remote, go to the setup screen and move the picture. Converge has nothing to do with where the picture sits but, where the red, blue & green dots land. All you should see are pure white dots. There should be absolutely NO color ghost anywhere on the screen. If so, you need a bar / dot generator to set the convergence to center the dots.

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Do you have any larger speakers close to you tv. Or any magnets been neer it. If you unplug it for a while the tv should have remove the rainbow

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If Convergence on setup dosen't work, And you think its not STK Convergence chips!, Then "Yes" It more then likely will have a few open Resistors!... (Near STK chips)

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Classis convergence failure - goto www.TvRepairKits.com to get a kit to fix this yourself

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Convergence circuit repair plus fuse in the power supply,
usually 300.-400.00.....................if you are mechanically
able and can solder well,it is possible to DIY...................T.

Mar 31, 2008 | Zenith IQB50M90W 50" Rear Projection...

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