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Hitachi 51UWX20B Projection TV

Hello, i am trying to locate the part number for the entire circuit board that contains the IC Convergence STK's? Its Chasis DP23. But i dont want to purchase all 3 boards in the chasis only the board that contains the STK IC's. Not able to locate the Part number clearly in the service manual. Does anyone know the part number for this particular board so i can price?

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  • kjhart Oct 09, 2008

    Thank you so much! Do you know if there is a place that may carry re-furbished Convergence PWB's at a lower price ? 350.00 is a bit high especially if this replacement does not fully solve the problem, then i would have to sink in some money.

  • kjhart Oct 11, 2008

    Sorry one last question, probably a stupid question but does part JT23051R (PWB board) cotain all the components attached? ie: Resistors, Fuses, IC's etc???



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Hitachi part number JT23051 is Obsolete the new part number for the Deflection Convergence PWB is JT23051R its available from Hitachi for around 350.00

Posted on Oct 08, 2008

  • Sonny Berry
    Sonny Berry Oct 11, 2008

    yes the PWB does contain all the parts. You can get your power board remanufactured at the following link. Just leave them a email they will respond quickly.



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My TV is the Hitachi model 51UWX20B and tried using magic focus to line up red color. Picture looks like 3D with red off center. When using magic focus it gets to the red phase and it shows the number 5...

You need to replace the STK ICs which are Convergence ICs STK392-110 use 120s or 150s
also check the small ohm resistors around ICs . They are Big Black ICs and will have part number on them ,should be located on the Right hand side of Chassis .
Mats Eletronics has Parts 1-800-628-1118 Convergence IC Kit.

Jul 04, 2011 | Hitachi 51UWX20B 51" Rear Projection...

1 Answer

8 year old 57F500. All of a sudden I am getting blue and yellow showdows

The trouble of your tv is the convergence try to adjust it manually using your remote control. If still nothings happens the trouble is your convergence ic it is located at the back of your tv it is attached to a large aluminum plate and the ic has a marking of stk- followed by a number try to replace it.

May 16, 2011 | Hitachi 57F500 57" Rear Projection...

1 Answer

The red will not align up in our Hitachi model 51UWX20B with magic focus done automatiaclly or manually. When the red first started to go out of line we did magic focus and it worked. then after turning...

You have a bad convergence board. You will have to remove the convergence board. If I remember,this board also has the flyback transformer mounted on the same board. It is quite complicated to pull this board. You will need to use different colored permy markers to remember how to reconnect the cables and connectors. The ICs you will replace are the STK-392-110 and STK-392-150. You will resistors that are low ohms (under 10 ohms) at two watts. They may be 1.5, 1.8, 2.2, 2.2, 2.7,3.3,3.9, and 4.7 ohms. For a full detailed instructions and photos see the website, Be sure to have your model number handy and follow the instructions on this website. I have repaired many TVs using this site. Thanks for asking and show all hands of support!

Apr 07, 2011 | Hitachi 51UWX20B 51" Rear Projection...

1 Answer

Picture showing up blurred (double vision) with alot of red in the picture as well

Try to adjust the convergence setting in your remote, if still does not work replace your convergence ic it has a print STK followed by a numbers it is located in your main board.

Oct 26, 2010 | Hitachi 53UWX10B 53" Rear Projection...

1 Answer

The picture is bowed and you can see double and the color is wrong

convergence ic stk----- you can repair this yourself if you can solder you can obtain ic.s from matt electronics or any electronic suppliers locate the convergence ic.s on chasis there will be 2 the number will start with stk- most likely stk-392-110 hope this helps

Oct 10, 2010 | Hitachi 43F300 43" Rear Projection...

1 Answer

Red shade to ever one

Convergence are dead.Must know how to solders?Must replaced 2 STK convergence ICS,and some or all it resistors.Tries Websites like Tv repair, to buy a convergence kit to repair it ur self.The shop will cost u $300-350 for the parts and labors.

Apr 20, 2010 | Hitachi 51UWX20B 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...

1 Answer


Bob, IK04 & 05 are the board designation numbers for the 2 stk 392-150`s, these are the convergence ic`s in your set and from your description that convergence circuit has failed again. They are high failure ic`s but usually last 5-6 yrs. not 1, if they were generics not originals then it wouldn`t surprise me but only the tech that installed them can answer that, do you have experience soldering & un-soldering ? If you don`t you can`t do this yourself, takes a good tech approx. 1.5 hrs to do, get back to me with more info and I`ll try to help you, video-tek

Jun 05, 2009 | Hitachi 51UWX20B 51" Rear Projection...

1 Answer

I am seeing double on my tv how can i fix this problem.thanks

Replace Both of your STK ICs and 5 or 7 low ohm resistors if your stks are 110s , 150s, upgrade to 180s.STKs are your convergence ics they are the big black ics will have part number on them STK392-110 etc...

May 20, 2009 | Hitachi 51UWX20B 51" Rear Projection...

1 Answer

Hitachi 43F300 convergence

Do not replace whole convergence board.Because convergence data stored in old board cannot transfered to your new board.Means in your new board there is no convergence data.Unless you have the service manual and know how to get service menu.

I believe if you have convergence problem one of your IC (STK) is bad along with couple of small
Value resistance.

Dont forgat to Rate!

Good Luck

Oct 21, 2008 | Hitachi 43F300 43" Rear Projection...

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