Question about Hitachi 53UWX10B 53" Rear Projection Television

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Hitachi 53uwx10b convergence board bad parts resistors? RK 50,54,58 burnt out how do I know the ohms or what to buy to replace??

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Re: Hitachi 53uwx10b

Hitachi has created a repair kit part# X480293 for this problem. It includes: (2)STK392-150 convergence ic's,resistors RK42 = 3.3 ohms,RK46 = 1.8 ohms,RK50 = 2.7 ohms,RK54 = 1.5 ohms,RK58 = 3.9 ohms,RK62 = 2.2 ohms,all 1 watt resistors.

Posted on Aug 20, 2007

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Re: Hitachi 53uwx10b


Posted on Sep 10, 2007

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I have a hitachi 43FDX15B RPTV It appears to have a convergence problem, I've read about replacing the stk IC's but which resistors need to be replaced and what are the values on the DP15k/08 Board?

This model uses two of the STK-392-120 CHIPS and here are most of the usual resistors to suspect or check:

Hitachi AT03411S RK43 RESISTOR Hitachi AT03608S RP22 RESISTOR Hitachi AT03195S RK46,RK54, RK62 RESISTOR, 1.8OHM 1W Hitachi AT03857M R815,R865 RESISTOR, 1/2W 100 OHM Hitachi AT03191S RK50 RESISTOR, 1W 1.2 OHM Hitachi AT03197S RK50 RESISTOR, 1W 2.2 OHM Hitachi AT03199S RK41 RESISTOR, 2.7 OHM 1W Hitachi AT03202S RK42 RESISTOR, 3.3OHM 1W Hitachi AT03204S RK58 RESISTOR, 3.9 OHM 1 WATTThe RK ones are all marked on top and bottom of circuit board---usually if one is bad you will be able to see it is discolored---all are very low value and should read open or good only.

This is a fairly easy set to do this on---the whole convergence board (right side from the back view) is held in with 3 screws and an assortment of plugs--3 plugs are identical (convergence yokes and you need to mark so you get each back in same place)

A row of black snap plugs on the left side and with the screws and other plugs removed the board will lift up and out of the set.

DON'T waste your money on one of the "kits" being sold on the net---you can buy a pair of the chips for about 12 dollars on Ebay and usually only one (if any) of the resistors will be bad---those kits sound like a good idea but at 50-80 you are buying things you will not likely need to repair the set.

Let me know if you have any questions and if this information helped you rate this solution as I do this here for free.



Dec 17, 2009 | Hitachi 43FDX15B 43" Rear Projection...

1 Answer

Hitachi 61UWX10BA RPTV Convergence Repair

All of the resistors that fail are very low reading ones---like RK54(1.5 OHM-1 WATT) RK50(2.2 OHM 1 WATT) AND RK58(2.7 OHM 1 WATT)

These are not large resistors--all have location numbers on top of the board under them---most of the protection ones will begin with RK----check them like a fuse--they rarely go off value and if no reading across them they are bad---

There will be some higher value resistors like 150 or 220 ohm----never seen one of those bad.

Sometimes you just have to check them all and if they are good replace the chips and see what you have.

Do not forget to apply heat sink compound to the new chips before you install them(remove any old grease first from the heat sink.)

Good soldering is important here.


Oct 28, 2009 | Hitachi 53UWX10B 53" Rear Projection...

1 Answer

As stated in your response to another person (Hitachi 43UWX10B)

Your post didn't get attached to the message in which you read the 'fix' for your set so the person who helped, will likely never see it.
You might try re-entering your brand/model info and sort through the results to find the original message.

Oct 24, 2009 | Hitachi 43UWX10B 43" Rear Projection...

1 Answer

The blue convergence seems to be off on the tv, and i'm not sure how to fix it

Take the back of the tv off but first unplug it Then look to the lower right and you should see 2 convergence IC's (STK392-110) and also look for a burnt resistor around them. If no burnt resistors replace convergence IC's with STK392-180 If you have a burnt resistor then respond back to me with location number on the board and I will get back to you with the value.

Jun 29, 2009 | Hitachi 53UWX10B 53" Rear Projection...

1 Answer

Burn RK 99 rezistor convergence board

Thanck you for your help i got repaire book

Mar 18, 2009 | Hitachi 53UWX10B 53" Rear Projection...

1 Answer

My convergance on my Hiatchi model #53UWX10B has gone bad what components on which board should I replace. Can I get a service manual as well.

You will need to replace the two STK392-110 Convergence ICs and you will need 6 feed resistors as well 3.3 ohm 1watt, 1.8 ohm 1watt, 2.7 ohm 1watt, 1.5 ohm 1watt 3.9 ohm 1watt, and a 2.2 ohm 1watt. You can get replacement ICs and resistors at the following link with free instaltion instructions with pictures and you can also get your service manual for your model too. Heres the link.

Jul 14, 2008 | Hitachi Projection Televisions

1 Answer


Working backwards now.......The burning smell will be the current limiting resistors near and in the circuit of the IC's
you changed..1 to 2 ohms, 1 or 2 watts.....caused by generic
replacement IC's STK392-110,120 or 150......Here is what to do to FixYa! First,please read some of my solutions for convergence
repairs...any brand,the info is generic,the repair parts are not....

1) REMOVE cheap IC's ! Replace with Hitachi part # CZ 01341
upgrade Mfr by Sanyo STK394-160

2)Replace any / all burnt or changed value resistors

3)Re-test to see any symptom....DO NOT CONVERGE

4)Think about putting the original DCU back,since it was
not the problem .......

5) Now where are we at ?? ............................T.

Feb 05, 2008 | Hitachi 53UWX10B 53" Rear Projection...

2 Answers

Resistor ohm values??????

RK42 = 2.2 , RK46 = 1.5 , RK58 = 3.3 , RK52 = 1.8 , RK 50 = 2.2 , RK54 = 1.5

Aug 28, 2007 | Hitachi 53UDX10B 53" Rear Projection...

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