Question about Hitachi 43UWX10B 43" Rear Projection Television

1 Answer

My TV works, but it's blury and only showing the colors Green and Red. Can you help? Tim

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  • statenation2 Sep 27, 2009

    Yes, that's a good way to describe it. It's just showing the colors Red and Green.

  • statenation2 Sep 28, 2009

    Awesome, I can do that. Please send the instructions and I will get the parts ordered. Thanks.

  • SD Tech
    SD Tech May 11, 2010

    Does picture look 3d?



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  • Hitachi Master
  • 14,553 Answers

If it is a 43uwx10b you need to replace both of the stk-392-110 convergence chips---If you can solder----this is a very easy set to do this repair on and you can buy both the chips for less than 15 dollars on Ebay.

I can describe here step by step instructions and what else you need to look for when you do the repair.

Let me know if you want the instructions----I don't know if you are able to do this repair--takes about an hour and as I said in this set it should be pretty easy job.


Posted on Sep 28, 2009

  • SD Tech
    SD Tech Sep 28, 2009

    Here is what you need to do:

    First--two versions of this model.

    1. Unplug TV set.
    2. Remove back cover of set.
    3.. On far right side of set as you look from the back you should see a circuit board about 4 inches wide and 12 inches deep(the easy version of this model)
    4. If this is the set you own and it has this board--you need to remove the 3 screws that secure it and unplug all the black foldover plugs on the left edge of the board. There are 6 more plugs to unplug(note and or mark them as 3 are identical and need to be plugged back where they each came from.
    5.) If this board is not there you will have to unbolt and pull the entire chassis back and up so the bottom faces the back of the TV to get at the chips.
    6. You should be able to see the two chips on the large metal heat sink on the far right side of the set--examine them for the correct STK number----on the left side of the heat sink look at all the resistors and look for any that are discolored or burnt in the middle.

    7. If you have the one with the removeable circuit board--take the board out by releasing the plastic tabs on the left side and pulling it out and back(it slips into slots on the front edge of the board.)

    8. With the board out apply Liquid solder flux to all 18 pins on each chip and with a good soldering iron and a de-solder braid unsolder both chips---once they are unsoldered remove the two screws that secure each---you will have to use a flatbladed screwdriver and break them loose from the heatsink.

    9. A good idea is to after you get them both out to clean the bottom of the board with denatured alcohol where they were soldered. Apply heat sink grease(heat sink compound) and install each of the two new chips---the pins have to be perfectly straight for you to get them in.

    10. Apply liquid solder flux to all the pins on each chip and carefully solder them in--when you are done check the connections to make sure all are soldered and not touching another pin. You may want to clean again.

    11. All the protect resistors have location numbers marked under them on top of the board---if you find a bad one you need to replace it or the set will still have the same problem---all the resistors can be checked like checking a fuse--most will read like a good fuse--a few will read higher--most of the the time if one is bad it will be discolored in the middle --look a little white.

    12. Install the board back and carefully reconnect all the plugs--turn the set on at this point and see what you have--if it looks fairly normal replace the screws and back cover and in the customer menu adjust the convergence.

    13. If you have the version that does not have the removeable board you do it the same way except you have to unbolt the entire chassis and flip it up so the bottom of all the boards face the back of the set--takes a little longer as you have to untie and release some cables to get enough room---

    14. let me know if you have questions--if you have the version with the removeable board---it should take less than a hour total for the fix.

    please rate this solution.


  • SD Tech
    SD Tech Sep 28, 2009

    IF you go to Ebay--select search, then advanced search, then search by seller--------look for: sewsales55 company is named Suburban Electronics---good seller and gives 6 month warranty on the parts--you should find a pair of chips from him about 12 dollars plus shipping--quick shipper and good people there.

    REMEMBER: if you need any help or have problems let me know--I can also teach you if you get the set working how to go into the advanced convergence mode to really fine adjust and save all the adjustments-- whatever happens take your time and let me know if you need help--do not forget to rate my solution here.




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