Question about Hitachi 43FDX01B TV

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Re: green convergence

Replaced convergence ics with no change, the blue does not line up

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  • JohnTVman Jan 03, 2008

    I checked the areas, everything is fine

    I used the Hitachi STK's

    still no luck on vertical blue convergence

  • JohnTVman Jan 03, 2008

    can't get into that site, so, is the problem coming from the power supply board?

  • JohnTVman Jan 04, 2008

    I checked the power board this morning, then turned the tv back on-now No Power only clicking

  • JohnTVman Jan 04, 2008

    the red standby light stays on

  • JohnTVman Jan 04, 2008

    oily substance coming from power supply board, from unknown part

  • JohnTVman Jan 04, 2008

    all checked good

    also cleaned board & rechecked fuses

    would the red standby light still stay on, all LED's are on, could it be the power regulator?

    your assistance is greatly appreciated

  • JohnTVman Jan 06, 2008

    the power is now back-2 pins were touching & caused shutdown

  • JohnTVman Jan 06, 2008

    yes we are back to no blue control now

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  • Master
  • 1,694 Answers

Check B+ feed resistors next to IC's for visual burn damage,
identify by board location, exact value important.......
What STK part # was used ? price ? quality ?................T.

Posted on Jan 03, 2008

  • 4 more comments 
  • Vista Electronics Jan 03, 2008

    You may need service literature to follow voltage from supply

    to Blue horiz / vertical Ic circuit..............T.

    can you use www.HitachiServiceUSA.com for S / M ?

  • Vista Electronics Jan 03, 2008

    Check any / all fuses in power supply.....small,soldered in pico

    fuses.....I'll have a look at the diagram ASAP.........T.

  • Vista Electronics Jan 04, 2008

    Check K154 near IC's....

    Check EP 93,94,95,96,97,98, (ie all pico fuses )...................T.

  • Vista Electronics Jan 04, 2008

    Oily substance can be CRT coolant drip...clean board with

    q-tips & alcohol......re-check fuses...............T.

  • Vista Electronics Jan 04, 2008

    I will check Hitachi website .....T.

  • Vista Electronics Jan 06, 2008

    Are we back to no blue control now ?................

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Posted on Jan 02, 2017

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1 Answer

Changed ICs Chips but still got bad convergence


After the IC replacement, convergence adjustments should be done. If you wish to get some details; visit the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/ Details of this adjustments are given.

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You need to remove the convergence Board and repalace the convergence IC's and and replace electrolytic caps and check for resistors that have changed in value. You can getb the parts at www.mcmelectronics.com com or just purchase a new board at www.partstore.com .

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Convergence problem - a tech may decide to change the convergence ICs

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Replace both of your convergence ICs they are big black ICs will have STK392-110 on them Call Mats 1-800-628-1118 10.95 each.

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Convergence problem. Replace the convergence ICs and check the low ohm feed resistors as well.

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My tv has like a blue tornado going across the screen whats wrong with it?


Have the convergence Ic's replaced. Your blue convergence IC has failed, when replacing have them both changed as the other one handles RED and Green convergence

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1 Answer

The Screen looks 3D & Colors don't line up on my big screen????


If the convergence is off more than 1/2 inch or so you can't adjust. you have a failure of hardware. most likely the output IC. This set has 2 outputs for convergence. Each output contains 3 circuits, Six circuits altogether 2 red ,2 blue and 2 green. The normal customer adjustment will only alow adjustment of blue and red. They should be converged onto the green. There is a much more complex adjustment in the service mode for Geometry and convergence. These adjustments are only needed when you replace a failed componnent like the output ic. These ICs have been upgraded several times since the production of this set. The latest and most powerfull version is STK394-160. If feel up to it I suggest changing both outputs and the corresponding output resistors. Then do a complete geometry and convergence alignment.

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I would change both ICs STK392-110 and also the 3.3ohm 1 watt resistors and the 1.8 ohm 1 watt you would need 2 of each resistor. Then your convergence would be new again. You can get replacement ICs and resistors at the following link with free shipping and free instalation instructions with pictures.
http://servicemanuals.vstore.ca/

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Confirmed Hitachi subs all STK392-110,120 and 150 to
STK394-160 ....I use Hitachi part number CZ 01341 = no re-calls
..................T.

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If the blue colors will not line up, and the blue appears to sag inward from one or more sides, then you can bet that one of your convergence IC's has either cracked loose or burned out. The IC should be resoldered or replaced and the convergence realigned by someone experienced with projection TV convergence circuits.

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