Question about Toshiba 42H81 42" Rear Projection Television

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Convergence Error on Toshiba 42H81

I have the convergence error message, I am a 16yr Navy Electronics technician and would like to fix this problem, I have master level experience with removal and replacement of IC's and want to know if after I replace the STK392-150s, how do I go about doing the convergence alignment. I have the service manual but the steps seem kinda vague.
Greg Rodriguez

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You should need to make any adjustments after replacing the STK392-150s. In case you do, check the links below:
http://myweb.accessus.net/~090/how2adj.html#5.2
http://www.alientech.net/tp61h95codes.html
Good Luck.

Posted on Mar 02, 2008

  • Jaime Hernandez Mar 03, 2008

    I meant you should not need to make any ...........

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Toshiba model 42H81 projection tv receiving blue and yellow shadows on screen.


Convergence is dead.Know how to solders?Must replaced the 2 convergence ICS and all it resistors.Tv Repair World.com,Tvrepairkits.com to buy a convergence kit to repair it ur self.The shop will cost u $300 for parts and labors.

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Red lamp is out of Focus and the red is curved on the bottom left hand side of the screen. Auto Focus shows error. What could cause this to happen.


Ur convergence is dead.Must know how to solders?Must change ICS and all it resistors in the convergence board.Tries Tv repair World.com,Tvrepairkits.com for the convergence kit.The shop will cost u $300 parts and labors.

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How much to get a toshiba 42H81 convergence?


If it is a minor misalignment it can be corrected from the user menu or the service menu. If it is a major misalignment because of faulty components, typically it will cost at least $300. Don't be surprised if you get a quote of $600 or more.
If you are handy and can solder, you can do it yourself for about $50.

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In that case the convergence Ic's are defective or "leaking" they must be replaced. these are the TDA's

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you have a convergence problem that will require the replacement of the convergence amp ics.

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Replace convergence IC's = requires chassis removal =
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Also,check micro fuses F851,F852,etc.
and with a good digital meter, check resistors feeding B+ to
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I have been using Stk392-110T made by Toshiba with no re-calls.Hitachi also has an upgrade IC.
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