Question about Hitachi 43UWX10B 43" Rear Projection Television

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Convergence concern replace ic's with stk394-160E, picture still double image and magic focus will not adjust picture, what resistors should I check

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  • Master
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Also check fuse devices EP 96,97....
What RK-xx or RP-xx resistor locations are bad ?.............T.

Posted on Feb 21, 2008

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  • Hitachi Master
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They are located right next to the Convergence ICs easy to spot. There are numerous identical resistors.Usually 1 or 2 will be open.

Posted on Feb 10, 2008

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I have a 53 inch hitachi ultravision #53UDX10B Its out of focus and when you press the magic focus button it trys then pops up with the # 4 in the corner is this a convergence problem or what ?


Yes, you have a convergence failure. Usually requires replacement of 2 X STK ICs and any burnt resistors associated with the function that is faulty.

Look at the user menu and compare with images on our Convergence Gallery. Try to adjust in the convergence adjust menu. Identify the functions that do not work and make note. When you replace the ICs, pay special attention to the low ohm resistors for the non-working function. They will be located near the colored plug associated with the non-working function. If red vertical will not adjust, check resistors near the red plug.

There are many posts and websites that offer "new and improved Convergence IC substitutes. My advice is to use the original part numbers and replace any burnt resistors with original values. Many ICs purchased on the Internet are very poor quality and do not work. Many users get substitute replacement ICs and never get their TVs working again.

If you have other electronics repair experience, this job may be done with some chance of success. If you have no experience, there are many secondary problems that can and usually do appear. Determining how to fix the secondary faults and how to correctly align the TV is difficult without prior convergence repair experience.

Some of the common problems encountered are:
1. Poor solder techniques, resulting in damaged PC boards or poor solder connections.
2. Poor quality or wrong parts installed and recognizing this problem.
3. Resistors open or burnt. Some resistors are weakened by the initial faulty IC. Replacing with a "good" IC and starting the TV causes the weakened resistors to burn up. IC may be ok but there are one or more open resistors that measured ok when ICs were being replaced.
4. Wrong ICs used, causing resistors to burn up.
5. Resistors that measure normal and become faulty when heated by current flow.
6. Recognizing that convergence circuit is repaired correctly and alignment is needed.
7. Major alignment in service menu required because data is corrupted by multiple tries of magic focus or manual adjustment while faulty circuit conditions exist.
8. Major alignment required because user adjusted centering rings or physically changed mechanical focus adjustment, then mis-adjusted convergence settings trying to correct mechanical alignment faults.
9. User has not connected plugs and connectors correctly and caused secondary damage or mis-alignment trying to correct secondary issue.

Physically replacing the ICs may appear simple but recognizing if a fault still exists or if correct repair is required causes many attempts at repair to fail. Keep it simple. Replace with good quality original part numbers, measure suspect resistors and adjust only what is necessary.

There are only 3 things to fix, IC failure, resistor failure and user induced secondary faults. Data processor and memory is bulletproof.

easyab

Apr 22, 2010 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

My problem with my 53" is that it has like a double picture in red outlining everything on the screen I can adjust it and take the red out to clear up the picture so that it has a normall veiw but every...


You need to go into the menu and adjust the convergence. It may be magic focus on this set. If that will not do it then replace the convergence ics. Check any resistors around the ics for open or value change.

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

1 Answer

Red convergance appears tp be off, seeing ghost images shifted left


Try adjusting the convergence. If it won't move see below- (or hitting Magic Focus for some Hitachi’s)

This sounds like convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually $200-$400 Be sure to vote/rate me if this helped Thanks!
See link for more detail
http://www.ehow.com/how_4575598_yourself-projection-tv-repair-convergence.html

Nov 24, 2009 | Projection Televisions

1 Answer

Picture looks curved on screen not flat and straight across. Images have pink and green streaks on them. We lined up the convergence as best we could but its not perfect and the screen still looks curved.


Try adjusting the convergence. If it won't move see below- (or hitting Magic Focus for some Hitachi’s)

This sounds like convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually $200-$400 Be sure to vote/rate me if this helped Thanks!
See link for more detail
http://www.ehow.com/how_4575598_yourself-projection-tv-repair-convergence.html

Nov 23, 2009 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

I see double pictures on top and bottom


Try adjusting the convergence. If it won't move see below- (or hitting Magic Focus for some Hitachi’s)

This sounds like convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually $200-$400 Be sure to vote/rate me if this helped Thanks!
See link for more detail between
charge http://www.ehow.com/how_4575598_yourself-projection-tv-repair-convergence.html

Oct 24, 2009 | Philips 51PW9363 51" Rear Projection...

1 Answer

Double picture red and blue, not converging


Try adjusting the convergence. If it won't move see below- (or hitting Magic Focus for some Hitachi’s)

This sounds like convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually charge between $200-$400 Be sure to vote/rate me if this helped Thanks!
See link for more detail
http://www.ehow.com/how_4575598_yourself-projection-tv-repair-convergence.html

Oct 06, 2009 | Toshiba 42H81 42" Rear Projection...

1 Answer

I have 64' rear projection tv the picture is showing double images. how do i adjust the horizontal focus


That's a convergence issue. It's an electronic failure in the convergence circuit. Most likely cause is defective convergence output ic's. Depending on make and model, they are usually stk's and need to be replaced by a qualified service technician as those ic's can cause other components to faill also (i.e. resistors). There may also be numerous alignments reaquired after those ic's are replaced...

Jul 31, 2009 | Sharp 64LHP4000 64" Rear Projection...

2 Answers

Convergence problem


replace the convergance ic chip on the board below the crt of whtever color is not working

Aug 29, 2008 | Sony Grand WEGA KDP-65WS550 65" Rear...

2 Answers

Magic Focus does not work.


Convergence issues usually resolved by changing convergence output amplifier IC's.....Original STK392-110 should be replaced
with upgrade Stk394-160E Hitachi part # CZ 01341,change both
for reliability.....check B+ feed resistors for over-heating....T.

Feb 04, 2008 | Hitachi 43UWX10B 43" Rear Projection...

1 Answer

53UDX10B 53 in. Rear Projection "3D vision"


the convergence IC`s and associated resistors have to be replaced, do not repeatedly push magic focus or the alignment after the parts change out will take longer which of course means higher repair bill, good luck

Nov 10, 2007 | Hitachi 53SDX01B 53" Rear Projection...

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