Question about Toshiba 42H81 42" Rear Projection Television

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My toshiba 42h81

The red focus line does not move sideways when I push auto focus.Then it says focus error.The picture has a double image like the red is not lined up.

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Re: My toshiba 42h81

Your convergence amplifiers have failed. There are lots of posts on this site for this problem. Take a look at this link:

There are a couple of links on this post that you will find helpful if you want to repair this yourself.

If you have more questions just ask.

Posted on Dec 28, 2007

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Auto focus has error. blue gun will not converge with teh red and green. On the auto focus the blue gun won't move verticaly

IF you do not get the right answer in the Chat session, close it and I will help you-----I know these sets very well.


Dec 28, 2009 | Toshiba 42H81 42" Rear Projection...

1 Answer

Toshiba TV Model 42H81 will not focus

Ur convergence it dead.Buy the kit and replace the ICS an the resister.Focus don't go that far.

Aug 11, 2009 | Toshiba 42H81 42" Rear Projection...

1 Answer

Convergence -manual

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.

William Rayburn, CET
Premium Technologies
PO Box 442
Long Beach, WA. 98631

Oct 11, 2008 | Toshiba 42H81 42" Rear Projection...

1 Answer

Like seeing double!

You need to replace both convergence ICs they are STK392-110. You can get replacement Ics with free instalation instructions with pictures at the following link

Jul 14, 2008 | Toshiba 42H81 42" Rear Projection...

1 Answer

Red line

Need convergence IC's and probably several resistors that have changed value. Seek professional help, someone who uses ORIGINAL ic's, not generic or knock-offs

Jan 03, 2008 | Toshiba 42H81 42" Rear Projection...

1 Answer


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

Nov 29, 2007 | Toshiba 51H83 51" Rear Projection...

1 Answer

42H81 touch focus error

check for bad solder connections on the connvergence ics if that dont fix it then replace them

Nov 01, 2007 | Toshiba 42H81 42" Rear Projection...

1 Answer

Help I have a 3 D image

You need to replace 2 ships stk 392-150 any question I'll be glad to help you 401 6170008 my name is George

Jan 19, 2007 | Toshiba 53H71 53 in. Rear Projection...

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