Question about Toshiba 42H81 42" Rear Projection Television

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Convergence -manual I am having a problem manually converging my tv. the touch picture button keeps saying error. When i try to do this manually,either the green lines are very far away from the blue and red and the blue and red stops before it even gets to the blue or I'm getting them there and it's still not doing anything. Also I am having a problem where the picture looks warped or wavy and doubled. It basically looks like it's in 3d. My Tosiba 42H81 Television also has all of a sudden started messing up on the convergence alignment. The touch focus shows the Red will NOT align with the others like it would normally and says "Touch Focus Error". I try to align manually align the `red'. The right half of the screen is way off to the right side of the rest of the colors for alignment - moreso than the left side. But cannot get the red + to move any further to the left. Moving up, down and right don't seem to be a problem, but moving left is. What is going on? How can this be solved? There is nothing in the manual regarding this convergence issue.

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  • oram1021 Oct 14, 2008

    I get a picture on the TV but there are yellow and blue shadows on everything. How do I fix this?

  • Anonymous Jan 26, 2009

    Bill,
    thank you for your response back to repair my convergence problem on my Tosiba 42H81, which you replied I need to replace the two STK392-110 Sanyo original convergence amps, then test and replace any or all of the 2.2ohm resistors in the yoke return path out in front of the amps.

    However, this would then lead to my next question. Do you feel this is something for my to install/replace these amps and resistors by a typical person such as myself - who is not an electronics expert, but can read instructions with diagrams and would be extremely careful during the replacement process?
    I am now unemployed, so I must try to keep my expenses down and would be willing to try, but only if you believe it wouldn't be too difficult to do so as well as any risks of causing new damage or problems.

    Thanks, Dan.

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Replace the convergence amps and test and replace any or all of the 2.2ohm resistors in the yoke return path out in front of the amps. This unit takes two STK392-110 Sanyo originals, DO NOT GET CHINESE KNOCK-OFFS... Buy them from Acme sales out of Florida and you can be assured they're originals.
Bill

William Rayburn, CET
Premium Technologies
PO Box 442
Long Beach, WA. 98631
360-642-4993

Posted on Oct 28, 2008

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Make this adjustment only after the TV as been on for at least 30 minutes.

Press the TOUCH FOCUS (auto convergence) button on the front of the TV at the bottom.
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Press MENU, and the press < or > until the PICTURE menu appears.
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There's a lot more the book says, but, I can say from experience that you just go through the different sub areas of this menu and converge each color separately, and bingo, it's fixed.

Good luck.

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http://servicemanuals.vstore.ca/

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· http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
· http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

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