Question about Toshiba 57H81 57" Rear Projection Television

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Toshiba 57h81 green will not focus

We have used the auto touch focus and have gotten touch focus error. I have also manually tryed to focus. The blue and red will line up, but the green is off center on the tv. It's like in a wave. The picture has a green wave across the bottom of the screen, creating ghost-like pictures. There is also a fine green line that goes across the middle of the screen. Is this something that can be fixed?

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  • gkmangino Nov 17, 2008

    I have the same problem but the red will not focus

  • holdenkids4 Nov 21, 2008

    I have a Toshiba 57H81 and recently have problems with convergence. The blue and green will not focus with each other and wavy lines appear at the top and bottom of screen. It worked fine one day and not the next. My remote has been lost so I can't adjust manually.Touch focus just says error.Please help me with a solution if you can.Thank you.

  • sperio Nov 22, 2008

    green line out of focus

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Typically this is a convergence problem and can be repair relatively easy. Refer to this video to determine if you truly have a convergence problem. Also make sure you use your TV's original remote to make this adjustment.

Posted on Apr 17, 2012

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Green line is off center. will not focus.

Posted on Nov 22, 2008

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1 Answer

I'm getting a double image of everything on the screen in a hazy blue colour. I tried configuring the colour within the menu but the cross simply won't line up. touch focus seems to work with the...


Your convergence has failed and needs to be repaired. Once quick test is to goto your convergence menu and see if you can adjust red and blue. If not its has failed and needs to be fixed. You can call in a repair shop or you can get the parts and instructions from www.TvRepairKits.com and do the repair yourself. Its a fairly easy DIY fix.

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My toshiba 57h81 tv is showing up double vision, looking like the red is off and not aligned. Also the touch focus in the menu says error whenever i try to touch focus it.


This tv have a problems known as a Convergence problems,it dead.The tv convergence board the 2 STK convergence ICS and some or all it resistors are dead.This parts must be replaced to solved the convergence board problems.The shop will cost u $300-350 for parts and labors.

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sounds like to me that you need to replace the convergence IC's.

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The convergence ICs and the six 1.8 ohm 1watt resistors need to be replaced. You can get the convergence repair kit for your model at www.tvrepairworld.com which has the Two Convergence ICs and the six resistors plus the CD with instructions on how to do the repair.

Dec 02, 2009 | Toshiba 57H81 57" Rear Projection...

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Convergence problem on a Toshiba 57h81


A service manual won't help you on this and yes it's most likely the convergence amps. That unit takes two stk392-110 Sanyo amps. You can substitue with stk392-150's or 180's also... Personally I'd get them from acme sales in florida along with any solder, de-soldering braid, heat sink compound and other supplies you'll need for the job. Acme, because you are assured of getting originals not some chineese knock-offs.
I'd suggest a package of 1.8 ohm/2w resistors, looks like that's what this unit uses in the yoke return circuit and they commonly have failed, and likely the cause for the amp failure. You might also take a meter to any picos in the circuit. F850, 851, 852 and see if any of them are open. If the amp opened you're okay, but if it went to ground it may have opened a fuse.
I will send the manual via Pando - so if you don't already have Pando go there first and download their free program.
Bill

Jan 17, 2009 | Toshiba 57H81 57" Rear Projection...

1 Answer

Touch Focus Error


let me guess error focus 4?
Convergence amp ic bad
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
http://www.hdtvoice.com/voice/showthread.php?t=28929
Or send to ptscorp.com
http://www.hdtvoice.com/voice/index.php?s=
good luck
please mark the post with a fixya


Feb 24, 2008 | Toshiba 57H81 57" Rear Projection...

2 Answers

TOUCH FOCUS ERROR on Projection Toshiba TV


My 57H81 won't converge, plus I get the "touch focus error" message. I could get manual convergence of blue, but not red. Plus, during touch focus the red would not move horizontally

Nov 25, 2007 | Toshiba 57H81 57" Rear Projection...

1 Answer

TOUCH FOCUS ERROR


The convergence IC`s need to be replaced and the related low ohm resistors need to be checked for proper value.

Oct 15, 2007 | Toshiba 57H81 57" Rear Projection...

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