Question about Sony KP-43HT20 43" Rear Projection HDTV-Ready Television

1 Answer

Sony KP-43HT20 convergence problem

My Sony KP-43HT20 projection TV was very good. I accidentally pushed Flash Focus button and it lose the convergence. I pushed Flash Focus button again many times. It could almost convergent the red and green colors, but couldn’t move the blue color as shown in the figures. The blue tube couldn’t project the parallel lines and the pictures are blurred, Could someone advise me how to fix the convergence problem? Thanks.

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  • 4 more comments 
  • rongda Jan 11, 2008

    Ladywinn:



    I apologize for taking this long to thank you for your advices because I was out of town. I believe that I’ll need your guidance to replace the ics. Thank you very much again.



    Rongda

  • rongda Jan 17, 2008

    Ladywinn:



    I found two ICs on D board from service manual. It shows both are STK392-560 and the part no. is 8-749-019-08. Should I order two? I appreciate your advices.



    Rongda.

  • rongda Jan 17, 2008

    Ladywinn:



    Thank you for the quick response. I'm going to order two ICs and let you know the results. Have a nice day!



    Rongda.

  • rongda Feb 05, 2008

    Ladywinn:



    I really couldn't find the 3.15 amp slow blow pico fuse for STK392-560. Would you please help?



    Thank you very much.



    Rongda.

  • rongda Feb 05, 2008

    Ladywinn:



    Sorry that I haven’t got the time to replace the STKs. I found that the pico fuse PS8006 (3.15 amp slow blow pico fuse) is open and 5 resistors (4.7 ohm, 1%, .5 w) for blue vertical are slightly dark. I assume I also need them to be replaced with STK together. However, I don't know where to get them. Place advice.



    Thank you so much.



    Rongda.

  • rongda Feb 07, 2008

    Ladywinn:



    I've ordered 2 ICs from Electronix and they are on the way to me. I hope I could get time to work on my TV soon. Thanks a lot!



    Rongda.

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  • Sony Master
  • 5,138 Answers

Replace STK-392-110s or 150s upgrade with 180s replace both ics.

Posted on Jan 09, 2008

  • 2 more comments 
  • ladywinn
    ladywinn Jan 17, 2008

    replace both ics this way they are equal ,if you only replaced one you will have more problems so replace both with same STKs.392-560s

  • ladywinn
    ladywinn Jan 17, 2008

    if you have any more problems let me know and i will try to help you, Have a nice Day!

  • ladywinn
    ladywinn Feb 05, 2008

    Hi, how have you been was wondering why are you looking for a pico fuse and have you already replaced STKs ? what kind of problem are you having?

  • ladywinn
    ladywinn Feb 05, 2008

    Heres a good company to order from Electronixs - you can order online http;/www.electronix.com 1-800-223-3205 STK392-560 cost 14.99 each.ThankYou for asking FixYa.

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1 Answer

Where is the magic focus button?


Most Sony Rear Projection TV have a small door under the screen with some manual controls. Push on spring loaded door to open. Magic Focus is near the bottom and labeled.

If Magic Focus does not restore for correct operation, check the Convergence Gallery to confirm if you have a convergence fault that needs repair. #8 is the Sony menu.

easyab@hotmail.com

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The picture on our Sony TV Model KP-43HT20 recently became distorted, concaving at top and bottom. If I use reset the Flash Focus, the picture will return to full screen side for awhile but the colors do...


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1 Answer

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http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/
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