Question about Hitachi 43UWX10B 43" Rear Projection Television

2 Answers

The color is not quite right now. Ther are a few waves of purple and green.

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  • christy_p922 Sep 08, 2009

    Can't find the convergence in the menu. We lost the remote, but can access the menu from the buttons on the t.v. Is it in the sharpness menu, that's the only part of the menu that talk about the color. We tried the magic focus and no change. Some of the areas that have the purple and green are also duplicating the picture.

  • SD Tech
    SD Tech May 11, 2010

    1. This sounds like a convergence problem. 2. Try to go into the customer menu and with the remote see if the convergence will or will not adjust. 3. If some color (red or blue) will not move in some direction--you have a bad convergence chip. 4. Confirm that model number is 43uwx10B and I will tell you what is needed to fix the set. SD TECH

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1.)This kind of trouble happens for a reason. The two convergence chips have a metal back and are bolted to either one large or two smaller heat sinks to keep them cool---a white grease is applied to the back of each chip to move heat fast---after some years the grease dries out and a chip reaches a point where it cannot move the heat fast enough and it goes.

2.) You can locate the chips inside the set--they are black, 2 1/2 inches wide and about 1 1/2 inches tall with the STK number printed on them in white--most of these sets use either STK-392-110 OR STK-392-150 CHIPS---the 150 chip is a higher current and longer lasting version of the 110 chip. You can buy a pair of these chips on Ebay for less than 13 dollars plus shipping.

3.)The chips have 18 pins each and need to be unsoldered to replace them----Most of the time you just need to replace both chips and adjust the set with a remote control---I did two Friday---takes about a hour to do this repair.

4.) I do not know what level of skill you have but if you can do this yourself--you will save some real money--once the chips are replaced and the set adjusted--it will not have this problem again for 5-8 years---about the only problem this kind of set has.

5.) If you cannot do this look for someone in your area who can do this---some shops will TRY to charge 300-400 to do this repair--I have done hundreds of these sets and here I charge 200-250 total cost.

6.) If you call and they say it "has to go to the shop" keep looking as any good tech can do this repair right in your home.

7.) Now is the slow time of year for TV repair shops--shop around and make SURE WHOEVER DOES THIS REPAIR CHANGES BOTH OF THE CHIPS---if only one gets replaced you will have the same problem again and soon.

8.) Yes, sometimes there will be a bad resistor or two damaged by one of the chips---no big deal--any good tech will be prepared for this.

9.) If you have ANY QUESTIONS OR NEED HELP LET ME KNOW- I am here to help people.

10.) I do this here for free so if this information has helped you take a minute and give me a vote here. Remember, IF you have questions just reply to this post here and I will try to help or advise you.

Regards, SD TECH

Posted on Sep 08, 2009

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  • Expert
  • 80 Answers

Needs new convergence chips, part number is stk 392 -110, they need to be soldered in, also there might be some burnt resistors around the chips, you need to visually inspect them. you need solder skills and disassembly ability. might need a tv repairman.

Posted on Sep 08, 2009

  • daniel tucker Sep 08, 2009

    the magic focus is your convergence adjustment, it is electronically adjusted and if the magic focus doesn't clear it up you definately need new convergence chips, this is one of the more trouble free models, convergence chips are all that ever go wrong, but no amount of adjustmentsa are gonna help, if you don't get the chips replaced it won't work.

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