Question about Toshiba 42H81 42" Rear Projection Television

Toshiba 42h81 picture shifted

A few days ago the picture shifted off center to the right. As a result of the convergence is off, green shadow around white objects and the overall picture is much darker. I have used the service menu to try and correct the convergence but it hasn't help much. Would resetting the HPOS back to the original code help? Does anyone have the default values for the 42H81? Thank you Henry

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Are you still working on your set? I can help......T.

Posted on Nov 23, 2007

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The picture is "ghosting" or doubled

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This is a convergence failure, common on this type of tv. here is a tutorial I made:
http://www.fixya.com/support/r5001731-convergence_diagnosing_convergence
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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 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
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*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
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You can see some more examples and find a fix here

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

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1 Answer

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michtech

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1 Answer

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you need to replace both of your convergence ICs they are STK392-110 you can get new replacements at the following link and they provide free instalation instructions with pictures. Heres the link
http://servicemanuals.vstore.ca/

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1 Answer

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Replace convergence IC's = requires chassis removal =
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