Question about Mitsubishi WS-55805 55" Rear Projection Television

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Mitsubishi 42 in hdtv

I have red and green shadowing in my picture...i've tried adjusting the convergence but that does not work...too far out of adjustment...picture sometimes corrects itself....any suggestions.
thank you! chris

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  • suitashlee Jan 10, 2008

    Some days it wants to be cooperative, but some days mine doesnt. It's doing the same thing. It turns into red green and blue separation, you mostly notice it on text, and the image seems to become curved like a rainbow. Sometimes it fixes itself, and i know its bad...but sometimes if i pound on the top of the TV once or twice the image comes back. I don't have the money to fix it and the picture is great...when its working.

  • mr dee Jan 22, 2008

    what is the cost of this/these parts and could this be done by a computer repair kinda guy or...what would a repair cost??

  • mr dee Jan 22, 2008

    the mdl# i have is a WT-42413

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Convergence issue = STK IC's involved on center circuit board.
You can solder the connects, but that is a temporary fix.
Correct solution is to replace IC's....need the exact model # off
the back of the set to verify part number...could be STK392-570
quantity 2 or STK393-570 quantity one...................T.

Posted on Dec 13, 2007

  • Vista Electronics Jan 22, 2008

    The center circuit board has a large heatsink with one IC on it.

    Part # STK393-570....you can either re-solder the pins of the IC

    or replace it for about $20.00.....take your time .........T.

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Picture shadow


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convergence solder connections likely going bad. you may be able to resolder or just replace the chips.
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http://www.fixya.com/support/r5001731-convergence_diagnosing_convergence

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I have a HCN4727w samsung. Red/green shadowing. Bowed image


Projection sets have two very common problems.

The first common problem is 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...

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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
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Thats caused by the convergence Ics having failed. www.tvrepairworld.com should have the convergence kit for your model. The kits also contain the CD with instructions.

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Something is not right here--The green is adjustable in the TECH menu--did this person adjust or try to adjust in the customer or the TECH menu?

If you confirm actual model number I can tell you how to get into the TECH menu--yes--green will not adjust in customer menu--it determines geometry and is only adjusted in the TECH menu.

Also, this set requires any convergence adjustments to be done in 480 and then in 1080--if only adjusted in one mode the other will still be bad.

Let me know if you know how to adjust in TECH menu or not--with exact model number I can tell you how to get there.

If this helps you rate this solution as I do this here for free.

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1 Answer

My picture suddenly has "ghosting" or "Shadowing." Cable is fine in the other room and I also tried the picture through my dvd. same thing.I tried the touch focus but this did nothing.


The most likely cause is shorted convergence chips and possibly a few pico fuses.

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,Pioneer2_bing.gif Hitachi,Mitsubishi,Zenith and others.
You can get a convergenece repair kit with instructions from the links below.

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

Problem #1) Convergence

Yours may have one or more of the following symptoms...

*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
*Red/Orange looking picture

You can see some more examples and find a fix herebb0cf99.png http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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Your television needs convergence adjusted. Seek your owners manual to do this.
If you need help locating it, let me know.

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