Question about Hitachi 43UWX10B 43" Rear Projection Television

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Convergence Problem? I have a 43 in. Hitachi rear projection tv. About two weeks, the focus on the left 1/3 of the screen appeared out of focus. Is this a convergence problem? If so, is the problem easily repaired?

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Re: Convergence Problem?

After speaking with a repairman in a local town, who expressed his anger over the trade going awry and leaving him in the dust. He finally told me that it would cost more to fix than to buy a new one. No help there. I am hoping you guys can assist us. I am ordering the two IC's recommended by you, however my concern now is your recommending a tech to do the alignment. Does this make reference involved, or the equipment we need? Time we have, equipment we do not. Can you offer more in your advise other than speaking with a distraught serviceman? Thanks!

Posted on Aug 13, 2007

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Re: Convergence Problem?

If one of the colors (red, green or blue) is suddenly shifted, especially on one side of the screen, then one of your convergence IC's has burned out and needs to be replaced. A good rule when this happens is to replace both STK392-110 convergence output IC's with the updated and improved STK392-150's. This is by far the most common failure in those projection sets and is fairly easy to correct. If you do not have experience in replacing covergence IC's and realigning the convergence circuits then allow a qualified tech to handle it for you.

Posted on Aug 05, 2007

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You have a defect in the convergence circuit. Both chips will need replaced and possibly a resistor or two. Chip part numbers are STK392-110. Typical repair runs around $350

Bill W

Mar 20, 2011 | Hitachi 43UWX10B 43" Rear Projection...

1 Answer

Left side of screen looks outof focus. can

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

Feb 24, 2010 | Hitachi 43UWX10B 43" Rear Projection...

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I have a Hitachi 43 " projection tv. There was double image in green and purple. I was able to fix it manually. The auto focus would not work. Now the problem is the appearance is curved at the top and...

Pull front bottom panel off of TV on convergence board where ICs are in Front of board is a setup switch Small blue contact switch Press and hold untill convergnce Pattern appears Now aline convergence, you must have you hand unit that came with TV.

Oct 02, 2009 | Hitachi 43UWX10B 43" Rear Projection...

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Yes, You will need to replace the 2 convergence IC's. Hitachi part # CZ01341. Generic part # STK394-160E These are the upgraded replacement parts. Also look for any burnt resistors near these IC's.

May 28, 2009 | Hitachi 43UWX10B 43" Rear Projection...

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Replace both STKs Use StK 329-180s if set is using110s,120,150s, I havent heard of anyone yet getting shocked from replacing ICs.

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Hi, replace the convergence IC`s and any fried resistors and chemical fuses (if any), do not push magic focus anymore it will not correct the prroblem and it will evenntually corrupt the DCU and cause you more problems (and of course more money), questions? ask awayy, video-tek

Feb 02, 2009 | Hitachi 43FDX20B 43" Rear Projection...

1 Answer

Red bar at left of screen will not dissapear

Good Day; Carlo;
There is an adjustment. Try the Convergence Adjustment, if no fix, the TV's circuits need repair and you should an Authorized Service Center, GET estimate first. Good Luck, big IRISH.

Jun 29, 2008 | Hitachi 43UWX10B 43" Rear Projection...

3 Answers

HITACHI 43UWX10B Color Convergence

Good Day,

Sounds like the TV's convergence circuit has failed:
*Call an Authorized Service Center and them give you an estimate cost of the repair, or
*Repair it your self; get KIT 10 locally or B&D Enterprises
Good luck, big IRISH.

Apr 28, 2008 | Hitachi 43UWX10B 43" Rear Projection...

1 Answer


One of your convergence IC's has burned out and needs to be replaced. A good rule here is to go ahead and replace both STK392-110 IC's with the new improved STK392-150's. If you have never replaced convergence IC's and realigned convergence circuits, allow a qualified tech to handle it for you.

Aug 12, 2007 | Hitachi 43UWX10B 43" Rear Projection...

1 Answer

Horizontal hour glass picture

The convergence Ics need replaced. In Hitachi, resistors and sometimes a coil needs replaced as well. The convergence/deflection PCB is available, but, the cost of that board is higher than having a servicer come to your home and repair the unit to component level. If you are not familar with this circuit, then call a servicer. Have them replace both ICs not just one. Make sure they are repairing to component level and not replacing the board. Hope this helps.

Dec 16, 2006 | Hitachi 43FWX20B 43" Rear Projection...

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