Question about Hitachi 53FDX20B 53" Rear Projection Television

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Hitachi Model 43FDX11D Will not Converge properly

A warranty technician replaced the Power Convergence Panel 2 years ago. The television is now experiencing the same focus / alignment problem. The TV is no longer under warranty. How hard is this to replace ...I am a network specialist who has experience working with the internals of computer equipment but no experience with television equipment.

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  • Tonemanyy Apr 03, 2008

    Thx for you prompt reply...can you send me the link to the IC's.

    I am pretty handy with the soldering iron.

    Hopefully they are cheaper than the Power Convergence Panel which is listed at $250.

  • Tonemanyy Apr 06, 2008

    I am having problems identifying the chips...there are many boards (6-8) in the device. Is there a way that you can assist me with the identification.

  • Anonymous Apr 18, 2008

    Can you tell me where the chip is?

  • Tonemanyy Apr 18, 2008

    Please tell me where the chip is?

  • Tonemanyy Apr 25, 2008

    I removed the chips without any problems.

    There are 2 Chips in my chasis...STK392-120 (D4E11) and STK392-120 (D4E12). Is there a difference between the 2 chips?



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  • Hitachi Master
  • 8,617 Answers

Its the ICs that go out on them just minor soldering and takes about an hour from start to finish. If you would like I can post a link where you can order replacements and they include free step by step instructions so you can do the repair yourself.

Posted on Apr 02, 2008

  • 1 more comment 
  • Sonny Berry
    Sonny Berry Apr 03, 2008

    They are about 20.00 each and you will need 2 or 3 depending on your chassis usually hitachis have two STK392-120 ICs and some have 3 STK4574. You will need to look inside your set to get the proper number off your ICs. They are attached to a large aluminum heat sink I will include a picture of what they look like . Here is the link for the replacement ICs just click on the convergence IC catagory and you will find your STK numbers listed there.

    and here is what they look like.

  • Sonny Berry
    Sonny Berry Apr 06, 2008

    can you post a picture of your chassis and I will circle the area where they are and repost it

  • Sonny Berry
    Sonny Berry Apr 21, 2008

    They should be attached to this heat sink.



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If the convergence is so far out that you cannot adjust with your customer access menu then You will probably need the convergence ICs replaced & possibly a fuse or resistor or 2. Then a complete convergence will be necessary & I HIGHLY recommend having a professional technician perform this task.

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Hello!you mean: colors out of convergence? nothing you can do about that, unless you replace 2 convergence amplifiers I.C. chips, plus all those burned 1 watt low ohms resistors with exact values, which only could be obtained via service manual or schematics. After resistor is burned, there is no way to read color code properly, due to partial evaporation of pigments. this is a "pro" job. If you try or tried, already to converge those "stubborn" crosses, there is more to do, even after you removed and replaced two 20 pin I.C. chips, soldered dead into sweep module, plus located and replaced resistors with precise values, you need to get your settings back to normal, by going into "factory service mode' or, at least into "convergence alignment" menu and fight with those crosses!Don't forget the white "****"! Otherwise, you will be re-servicing your set all over after 30 days of usage.good luck,Alex.

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How do i manully converge 50" Hitachi projection

You have to get into whats called DCAM mode to manually converge the set if you don't see a menu option for convergence. Goto the site - they have a DCAM article on their tips page.

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On my Hitachi there's a convergence button on the front panel. Press that button which will give you red & blue lines. You have to use your remote to converge (align) those lines to correct the picture. If the lines won't converge I've been told it could be a bad convergence IC & tech is needed to fix...could be approx $300 to fix.

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Take to a servicer and have them check the convergence Ic's and resistors then converg the set,auto convergence won't work if you have a defective parts,replace them first.

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I recently helped a friend repair this problem. If you are comfortable soldering it won't be too bad.

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