Question about Toshiba 57H81 57" Rear Projection Television

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TOUCH FOCUS ERROR on Projection Toshiba TV

Hello Guru. I am getting the same error as ronny. My Toshiba has the TOUCH FOCUS ERROR message and the blue lines do not converge. I see a resolution was posted to replace the convergence IC's and that the Low OHM Resistors need to be checked for proper value.

Can you tell me how to do that? Thanks...

rbgaunt@yahoo.com

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  • rbgaunt Nov 25, 2007

    Hello Guru. I actually have a 43H71 Toshiba TV. If you can let me know what the convergence IC's are and where they are and where the Low OHM Resistors are, my hubby may be able to look into repairing it. I have already spent $400 on the flashing power light to fix it....it turned out to be 2 fuses which would have cost $8.00, but with pick up and 'diagnostic' time (yeah right!), it was an additional $372!!!! What a rip off and I had no TV for 2 weeks!



    I am really upset over this latest problem....please someone help! Thanks!


  • rbgaunt Dec 10, 2007

    FixYa Guys, you are AWESOME!!!!



    We decided to fix our TV based on the research I did in your website. OMG...! Hubby did it! We ordered two STK392-120 ICs on E-bay, and purchased a rather nice electronic soldering kit, plus heatsink compound and a few other items in Radio Shack. He unscrewed the back panel and was very careful to remove only what he had to, a few connectors. However, the model 43H71 is different from the other XXH71 models. The main board is situated in the front on the right-hand side. The STK392-110s are to the left of the board and they have a metal panel in front about 1/2". There was no way to get to the ICs easily or to remove them from underneath. Hubby had to carefully pull up on the metal panel, unscrew the ICs and several other parts (of course he desoldered them from underneath) until he was able to pull the ICs up and out very carefully. He then cleaned up everything, re-heatsinked (a word?) the ICs, installed them (with some effort), re-soldered and finished the job. All in all, it took about 3 hours or so and total cost was about $70. The TV looks even better than before.



    I just want to thank you all for saving us lots of mula! We were actually thinking of getting a new TV!



    I bake quite well and if any of you were in my neighborhood, I would bake something special in appreciation of your honesty and expertise! Thank you again!



    Regards, Aunt Ruth


  • andrewb432 Aug 03, 2008

    I have a Toshiba 65hx81 projection tv the touch focus error



  • DaizyBaby Aug 15, 2008

    Looks 3D Red lines are off balance.

    When we hit the automatic touch focus --it say touch focus error.

    you can see how the blue and green lines vertical and horizontal are straight. The red has a moon shape to it.



    We have used the automatic touch focus-does not work.

    We used the manual convergence in menu. The red crosses just will not move to line up with the green and blue ones.

    Even unplug the TV at night cause thought it would like reset itself.



    What else to do? Please help!

  • brakes4torna Nov 24, 2008

    Hello Guru. I am getting the same error as rbgaunt. My Toshiba 57H81 has the TOUCH FOCUS ERROR message and the blue lines do not converge properly. I have a some technical experience from my military service but televisions weren't my thing. Any ideas?

  • cobra123z Dec 04, 2008

    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. I replaced 2 STK392-110 with no improvement. I found one bad resistor, R7726, and replaced it. Still same, but now the red does move both ways during touch focus. What can I try next?

  • heals733 Apr 17, 2009

    3D Red lines are off balance.
    When we hit the automatic touch focus --it say touch focus error.
    you can see how the blue and green lines vertical and horizontal are straight. The red has a moon shape to it.
    We have used the automatic touch focus-does not work.
    We used the manual convergence in menu. The red crosses just will not move to line up with the green and blue ones.
    Even unplug the TV at night cause thought it would like reset itself.
    Please help!

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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

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I hope it doesn't fail again ebay parts have been know to fail because some are look a likes. trust a well know company like MCM electronics or B&D electronics
glad it fixed it for you

Posted on Dec 19, 2007

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1 Answer

Touch focus error blue


The tv HYPER board it is dead aslo known as a tv convergence board.Tv have a convergence problems,it is dead.Tv Magic Focus button no longer response give error messages.Tv have any colors lines R,G,B mis alignments,have colors shadows pictures or 3D picture look alike?Yes,than the tv HYPER board it is dead also known as a tv convergence board must have it components parts replaced like 2 STK convergence ICS and some or all of resistors too.To fixed the tv HYPER also known as a tv convergence board to solved the tv convergence pictures problems.The tvs shops will cost u like $300-350 for parts and labors.

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

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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.

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youre convergence ICs need to be replaced there are two of them they are both STK392-110 you can get replacement Ics and free instalation instructions at the following link.
http://servicemanuals.vstore.ca/

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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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Touch Focus Error


Even if the pix appears to be "OK", the internal convergence

alignment (in servicer mode) must be accurate within certain

parameters for the Touch Focus function to complete w/o error.

Adjustments should be done in "Full" mode,both HD & regular

signal.

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Blue ghost


If you have the ability to work on solid state electronics and know how these circuits work, you will need to replace the convergence IC's in this TV set. If you do not, call in a pro to assist you in this repair. Good Luck

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