Question about Hitachi 53UDX10B 53" Rear Projection Television

2 Answers

Resistor ohm values??????

Fist off I am a newbie who has an out of convergence Hitachi . After lots of reading I found out I had convergence issues so I ordered 2 STK392-150 (I read it is an upgrade from the STK392-110) but I am unsure about the ohm values for resistors RK42, Rk46, RK62, RK58, RK54 and RK50. Does anyone have schematics for my TV or know the values? Thanks

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  • CCTexan Aug 29, 2007

    Thanks but did you give me RK52 instead of RK62?

  • CCTexan Aug 29, 2007

    Hey thanks. The kit I ordered comes with the following resistors 1.5,1.8,2.2,2.7,3.3, and 3.9 so I guess I will need to order some more? Also is it ok to use the STK392-150?

  • CCTexan Aug 29, 2007

    I got an email back from the place I ordered the kit from. Here is a copy of it.

    For model# 53UDX10B,
    To the best of our knowledge here are the resistor values.
    RK42 3.3 ohm
    RK46 1.8 ohm
    RK58 3.9 ohm
    RK62 2.2 ohm
    RK50 3.3 ohm
    RK54 1.8 ohm
    It seems this model has 2, 3.3 ohm resistors & 2, 1,8 ohm resistors.
    Again, this is to the best of our knowledge.

    So I guess they must be wrong????????

  • CCTexan Aug 29, 2007

    It looks like RK54,RK50, and RK58 are burned up but I have not tested them yet.

  • CCTexan Aug 30, 2007

    Thanks so much for your help. RK54, Rk50, and RK58 were burned out and showed no value with the multimeter so I had no choice but to change them out. After testing the remaining three and finding values similar to those provided by the repair kit supplier I went ahead and changed them out as follows: RK54 1.5 ohms, RK50 2.7 ohms, and RK58 3.9 Ohms. It took me about and hour to manually adjust the convergence, (probably since it was my first time ever to try it) but it was well worth it. The picture is better than I can remember.

  • Stecolp Mar 08, 2008

    I'm an idiot..but with your help I can do the fix...thanks!!!!!!!! but 1 more idoitic question....what is the watts on the resistors? are the 1/2 or 1....my guess is 1/2...but we all know what guessing brings lol.....



    thanks again for your knowledge!!!!!!!!!!!

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

Posted on Aug 29, 2007

  • 1 more comment 
  • Mike Longo
    Mike Longo Aug 29, 2007

    You are right, I hit the wrong key (5 instead of 6). RK62 is 1.8 ohms. RK42 is the red horizontal channel, RK46 is red vertical, RK58 is green horizontal, RK62 is green vertical, RK50 is blue horizontal and RK54 is blue vertical.

  • Mike Longo
    Mike Longo Aug 29, 2007

    Always use the STK392-150 in place of the -110. It is the improved, stronger version. The resistor values I posted come right from the schematic, so I am not sure why they sent those values in the kit. If the original resistors look fine, and none of them has burned up, I always leave the original in there. They only go bad when an IC shorts out, so there is no need to replace them if they are good.

  • Mike Longo
    Mike Longo Aug 30, 2007

    I have an account with Hitachi and I have access to all of their service manuals. According to the service manual posted by Hitachi, the resistor values for the 53UDX10B are the ones I originally posted, which should be the values of the original resistors in your set. I did some more research at the Hitachi website and found the service bulletin describing the convergence output IC kit. It states that for the 53UDX10B and the 61UDX10B, the values have changed to the values you have listed. Since the STK392-150 functions exactly like the -110, if you change the values of the resistors you will have to do a complete realignment of the convergence in the service mode. Personally, I replace both STK outputs but leave the resistors alone, since the digital convergence is aligned with those resistors.

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Rk 54 resistor value for an hitachi 43FDX01B

Posted on May 02, 2010

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Posted on Jan 02, 2017

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SOURCE: 65xwx20b

i need value for RK62, resistor burnt and cant see colors. on DP2X board 57SWX20B near the green STK connector.

Posted on Mar 24, 2008

SD Tech
  • 14553 Answers

SOURCE: i need the resistor values for RK42, RK46, RK50,

If it is 53uwx10B:

RK42 2.2 OHM 1 WATT
RK46 1.5 OHM 1 WATT
RK50 2.2 OHM 1 WATT
RK54 1.5 OHM 1 WATT
RK58 2.7 OHM 1 WATT
RK62 1.8 OHM 1 WATT


Double check the numbers on the STK chips as most of these sets use STK-392-110 OR 392-150 CHIPS-----ONLY A FEW OTHER MODELS(MOST 43 INCH USE THE 120 CHIP.)


I do this here for free so if this helps you take just a minute and give me a vote here.

If you have any questions or need help reply to this posting here--I am here to help people.

REGARDS, SD TECH

Posted on Sep 20, 2009

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1 Answer

Vertical lines and 3d ghosting


If the problem is exactly like before one of the protect resistors is bad.

The color bands denote value in resistance and usually it will be a 1.2, 1.5 or 2.2 ohm resistor. You check them with a ohm meter, like checking a fuse--any that has no reading across it is gone.

Usually they will be discolored but sometimes they open so fast they do NOT discolor.

There are only about twelve of them and many are higher values--150 ohms or more==always it is a low value resistor that opens--it is what it is there for--a chip shorts in some way and the resistor opens to protect the power supply that feeds it.

Looking is not always enough, you have to check them. If this is helpful a rating would be appreciated as I do this here for free.

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Tip

Hitiachi Convergence Circuit Resistor Values


This site has been very helpful in diagnosing and repairing my Hitachi 57XWX20B. I recently changed the IC's and a resistor to fixe a convergence problem and had to use the small button on the convergence circuit to get set to return from static mode and enter dynamic mode. I searched everywhere trying to locate the correct resistor values and noticed many other's needing the same information. Here are the results of my research. I obtained some from manuals and others from comparison of the different models. My main focus was finding the values for the 57XWX20B. The resistor values are given in ohms at 1 watt. This means RK42 is a 3.3 OHM 1 watt resistor. RK58 was the problem in my set. It was giving a value of 2.3 and needed to be 4.7. I first replaced the IC's and thought the resistors were all good, but I later noticed my convergence was off. I could manually align it but the magic focus initiation would not save. It gave an overflow error. I bought the sanyo brand of IC's, not the cheap inports and found that if you use a desoldering wick then the repair is easy. The new IC's restored the beautiful color the set had when new. Now it is brilliant as well as converged. My repair cost was:
STK-110 13.00 Bought from local electronic supplier
STK-150 15.00
RK58 3.00 Bought from a local TV repair shop

The elecronic supply store gave me 6 inches of desouldering wick
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1 Answer

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?


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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.

SD TECH


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