Question about Hitachi 51SWX20B 51" Rear Projection Television

2 Answers

Hitachi 51SWX20B Convergence problem

I hope someone can help.
My 51SWX20B has been a great TV but all of the sudden the convergence went out. The horizontal convergence lines are fine but vertical lines are really weird, I run the 'Magic Focus" and it appears to run normally and horizontal lines are still fine and looking in the exact center (vertically) in the screen, as you go out to the right the red is pushed out to the right and the green even further, to the left of center the red is pushed left and the green farther to the left. The horizontal convergence is fine. I can manually tweak it back into place but they all interac t and it's a pain and there are major distortions on the edges of the picture.

Please help!

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  • 6 more comments 
  • PsychoDad Jan 28, 2008

    What chip should I use for my TV, is it the STK392-150? Or is there an upgrade like the STK392-180?



    Thanks,

    Clayton

  • PsychoDad Jan 29, 2008

    I don't know, I have not opened the unit yet. It's never been serviced before.


  • PsychoDad Jan 29, 2008


    The service manual says that they are:



    IK04/IK05 are CZ00431 HYBRID IC (STK392-110)

  • PsychoDad Jan 29, 2008

    I went ahead and ordered the OEM Sanyo 110's. Should have them Friday.

  • PsychoDad Feb 11, 2008

    I replaced the convergence IC's and have exactly the same problem. Here is a picture of my TV screen..... Please help!





  • Anonymous Jan 11, 2009

    psychodad i an a psychodad myself my tv is making me crazy can you please email or send me a copy of thed repair manual my email address is mdurette@cox.net or just send me an email and i will write you my address, i am having the same exact problem as you red green and blue are off changed chips and all resistors and magic focus does not work stops at 3rd line on red than 5 appears on right bottom of screen. Help!!!!!!!!!!!!!

  • barbhalsell Feb 21, 2009

    Sounds like EXACTLY what we found this morning when we turned on our TV. Did PsychoDad,s problem get fixed? Has anyone else bought the repair kit and been successful?

  • Savoini Mar 04, 2009

    My father-in-law has a TV problem that looks exactly like the picture in the last comment. The grid looks normal in the center but the outer corners (upper left and lower right) are skewed with pink and green lines that won't line up. How can we fix it? Does it need the repair kit described below or can it be adjusted by the controls?

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2 Answers

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  • Hitachi Master
  • 3,459 Answers

Solution:

Your TV has a convergence problem. Here are some of the most common symptoms.

Screen looks 3D
One or more colors can't be adjusted when using the convergence menu.
Screen is bowed in or warped.

Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence or magic focus section.

Try to adjust the convergence.

You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

Its a fairly easy fix on the Hitachi sets.

You can get a repair kit that includes all the parts from www.TvRepairKits.com. The kit includes a photo instruction guide, original Sanyo STK chips, convergence resistors, etc.
Everything you need to fix it yourself.

Posted on Jan 29, 2009

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  • Master
  • 4,402 Answers

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
Sony Convergence
http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/
http://www.techlore.com/article/19631/Sony-Convergence-Procedure/

Posted on Jan 28, 2008

  • 1 more comment 
  • Cary Farah
    Cary Farah Jan 29, 2008

    what chip is currently in you set?

  • Cary Farah
    Cary Farah Jan 29, 2008

    need to know what in it first otherwise im just assuming.

  • Cary Farah
    Cary Farah Feb 11, 2008

    have you ran a do another magic focus after you installed the chips?
    did you check the resisters?

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1 Answer

There are blue shadows around heads, much of the print is in yellow


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

Aug 20, 2010 | Hitachi 51SWX20B 51" Rear Projection...

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I used Hitachi TV convergence repair kit to fix tv


Check the Components received are compatible with manufacturers numbers or if they are generic the voltage,ohmage,ampage and resistance must be almost the same.

Using a multimeter take out and test each individual components.They could have sent you faulty parts.

Ensure you follow the instructions very carefully when soldering them onto the board.

Hope this helps you

Mar 26, 2010 | Hitachi 51SWX20B 51" Rear Projection...

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The convergence going bad again on my Hitachi 51swx20b


Sounds like loose solder on the chips. Either that or they are failing. You can save money next time by doing it yourself with a kit from www.TvRepairKits.com

Jan 10, 2010 | Hitachi 51SWX20B 51" Rear Projection...

1 Answer

Have an Hitachi 51swx20b. The colors are not aligned and magic focus will not work. Vertical and sharpness is grayed out...


Ur convergence it dead.U know how to solders?Buy a convergence kit to replaced parts.Websites Tv repair World.com Tvrepairkits.com.

Dec 16, 2009 | Hitachi 51SWX20B 51" Rear Projection...

1 Answer

Colorful vertical lines


Ur convergence is dead,U know how to solder Wright?Need to buy a convergence kid,use the parts in that kit.Tries these websites Ebay.com,Tv Repair World.com.

Sep 20, 2009 | Hitachi 51SWX20B 51" Rear Projection...

1 Answer

Hitachi 51UWX20B no sound, no picture, blinking green LED


The 392-150 is a higher current device then the 110---you can use either--this is normal in the hitachi sets---I usually replace both with 150's---check the led that does not light---should indicate which voltage source is bad---if it is one of the 2 voltages for the convergence ic's(one is a positive and the other a negative voltage) then the convergence Ic's may be bad---look for any discolored resistors around the ic's---one way to tell if it is a convergence ic is to de-solder both ic's and see if the set turns on(the convergence will be out the window) but if it comes on change both and do the alignments with the Hitachi remote. By the way----the led should have a location number printed on the top of the circuit board.

Aug 07, 2009 | Hitachi 51SWX20B 51" Rear Projection...

2 Answers

Can I replace a 110 Convergence IC with a 150?


The 110s have a high failure Rate of getting to hot and pinns fall off use 180s.also replace the 7 low ohm resistors.

May 05, 2009 | Hitachi 51SWX20B 51" Rear Projection...

2 Answers

No picture no sound


Could be a bad relay, or a bad power supply, or something else. Unplug the TV for a while (overnight perhaps) to see if it "resets
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
Sony Convergence
http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/
http://www.techlore.com/article/19631/Sony-Convergence-Procedure/

Oct 10, 2007 | Hitachi 51SWX20B 51" Rear Projection...

1 Answer

No Sound, No Picture


loose connection inside i would check the convergence amp area.
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
Sony Convergence
http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/
http://www.techlore.com/article/19631/Sony-Convergence-Procedure/

Sep 23, 2007 | Hitachi 51SWX20B 51" Rear Projection...

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