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COLOR SHADOWS ON ENTIRE SCREEN AND CONVERGENCE DID NOT WORK

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  • LEN300 Sep 12, 2008

    The model# for this unit is WS-55809

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For the price difference I think I can give it a shot? If not successful then I guess it's time for a new TV unit? Can you give me the instructions and I will follow them to the letter? What kind of meter and solder do I need? Thanks.....

Posted on Sep 12, 2008

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  • 203 Answers

Sounds like a convergence circuit gone bad. If you can provide a model number we can be much more helpful to you.

Posted on Sep 12, 2008

  • experttv
    experttv Sep 12, 2008

    Convergence is common to go bad in the model. If you know how to use a meter and solder I can walk you through this repair, it should cost you less than $100. If not you will need a repairman to come and do it for you, this will cost you around $300-$500. let me know what you would like to do?



    Tim Nolan

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1 Answer

My hitachi big screen has red shadows on picture how do i fix it


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There is a blue shadow (especially around on screen graphics, lettering etc.) when in HD mode. I attempted to align the colors through the color convergence but the blue alignment did not work. I also...


No.This tv have a convergence problems,it dead.The tv have R,G,B colors lines mis alignments,have colors shadows pictures or 3D pictures look alike?The tv convergence board,must be repaired by repacling 2 STK convergence ICS and some or all of it resistors too.To fixed the tv convergence board,to solved the tv picture convergence problems.The shop,will cost u like $300-350 for parts and labors.

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1 Answer

Dark shadow spot on bottom of screen


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The picture on my TV has started to "shadow" or double on the sides of the screen and seems to be slowly working its way across the entire screen. The color is also getting goofy. My set is 7 years old.


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....
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•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


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fcabb43.pngCONVERGENCE SOLUTION

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

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I had similar symptoms about a year ago. Also came on sudden. The red convergence chip had burned out (poor heat sinking on this model Hitachi). Replacing the color convergence chips fixed it. ($50 for parts.) First, however, have you tried the "magic focus" function? That's explained in the manual, which is available online IIRC, but I'd have to look for the link if you need it.

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When we turned on our set, the image has a shadow,


This is a common problem. Its called a convergence failure.

Problem #1) Convergence

Symptoms:

  • Screen Looks 3D
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You can see some examples and find a fix here...

http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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SONY PROJECTION TV MODEL # KP-51WS510.


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If the colors are double and do not match, with lines of different colors around pictures , then you have a convergence problem, often caused by a faulty convergence board.

The curving effect can be a side effect of bad convergence, or you may have both problems at once.

Unless you are a TV repairer yourself, better calling technical support. Usually you can ring the number listed on the owner manual.

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2 Answers

Shadowed colors inpicture


Do not adjust any knobs as instucted in the previous thread if you TV have a convergence problem. Doing so will only make things worse. The blog does however show you how to fix other common problems with these sets.

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.
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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.

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.

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