Question about Hitachi 53UDX10B 53" Rear Projection Television

2 Answers

Removing the JK07132-A convergence board

I have red and green ghosting on my 53UDX10B Hitachi rear projection TV, and I cannot adjust the red convergence. I took off the back cover and see a blackened resisitor on the JK07132-A convergence board. I've read advice here to replace the amps and resistors to repair convergence problems like I have. Do I need to discharge the caps before removing this board? Or can I simply unplug the connectors to it being careful where I touch otherwise?

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  • Robert Katman Dec 29, 2008

    Welcomejee,



    Thanks, I had it unplugged over 24 hours. I guess that was long enough.

  • Robert Katman Dec 29, 2008

    welcomejee,



    Removing the board is another problem. It has 6 plastic snaps that hold
    it in place, 3 on each side. Access to one snap on the far right is
    blocked by a large cooling fin and what looks like a metal RF box and
    by the side wall of the TV set, so I can't get my hand in there and a
    screwdriver didn't work. I can release the other five snaps but not
    this one, so the board won't come loose. The board is also held by a
    plastic lip at the side farthest away from me so I can't pop it up on
    the side I am able to release. Any ideas?





  • star823 Dec 30, 2008

    MY BLUE AND GREEN IS FINE BUT THE RED IS OUT OF LINE IN THE UPPER RIGHT HAND CORNER OF THE SCREEN....IT LOOKS LIKE A BIG WAVE

  • Robert Katman Dec 31, 2008

    star823,



    Try manual convergence alignment in service mode.
    If you can't adjust red (I can't) then from what I've read here, the
    convergence amps and some resistors need to be replaced. Time to call
    in a tech if you can't DIY.





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Bueno, tiene problema de convergencia ,cambie los 2 chips o integrados , STK 392-110 y 2 resistencias de 1.5 ohmios 1/2 watt, y ves otra resistencia que quemadas o defectuosa cambiela y despues , ajuste la converjecia con el cotrlol remoto. buena suerte.!!!

Posted on Mar 14, 2014

  • petterr
    petterr Mar 06, 2015

    Hola con respecto a los problemas de convergencia de los TV de proyecci?n, casi todos producen el mismo problema, ,cambie los 2 chips o integrados , STK 392-110 y 2 resistencias de 1.5 ohmios 1/2 watt, y ves otra resistencia que quemadas o defectuosa cambiela y despues , ajuste la converjecia con el cotrlol remoto.

    los n?meros de partes, de los chips , integrados y resistencias , cambia, dependiendo de las marcas y modelos de cada TV. buena suerte. saludes y comenten.:

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Unplug TV from ac outlet for few hours, this will discharge caps in circuit boards and you can take out desired board after unplugging connectors.
Always Be Careful while doing repair in TV.

Posted on Dec 26, 2008

  • Shahid Electronics
    Shahid Electronics Dec 29, 2008

    thats OK, now you can unplug its connectors and take out board.

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1 Answer

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The tv have a problems known as a convergence problems,it dead.The tv have colors R,G,B lines mis alignment,have colors shadows or 3D pictures.The tv convergence board,the 2 STK convergence ICS and some or all it resistors are dead.These parts,must be replaced to solved the tv convergence picture problems.The shop,will cost u $300-350 for parts and labors.

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Tv have a problems known as a convergence problems,it dead.Any colors lines R,G,B mis alignment,have colors shadows pictures or 3D pictures.The tv convergence board,the 2 STK convergence ICS and some or all it resistors are dead.These parts,must be replaced on the convergence board,to solved the convergence problems.The shop,will cost u $300-350 for parts and labors.

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Let me post a few photos and you let me know if they show something like your problem.

I suspect from your description you have a convergence problem.

If I am right rate this solution as I do this here for free.

SD TECH


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My hitachi 53udx10b tv is out of focus.


rojamon,

That #4 error is listed as "overflow," and I got a"ROM overflow" errorwhen I tried to save my adjusted convergence data.I don't know whatthat all means yet, but if I figure out my problem,I'll post backhere. I've read here and elsewhere that the out-of-focusproblem comesfrom bad resistors or amps on the convergence board. Youcan tryservice mode to adjust convergence. Press the Magic Focusbutton, andthen press it again to stop it, and then press the Statusbutton onyour remote. Here's a link to the manual convergence procedure (scroll down).





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1 Answer

Top left of tv swoops down, red and green


this is the convergence IC's that will need replacing and the resistors on them will need to be tested
here is an example of the convergence IC's http://www.nteinc.com/specs/7100to7199/pdf/nte7178_81.pdf

Dec 10, 2008 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

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More than likely it is a convergence problem. Best way to tell is to unplug the plugs marked red conv, blue conv, and green conv. Careful not to unplug yoke plugs by mistake, and make sure you mark plug and board when disconnecting. If convergence amps are the problem, set should power up with convergence plugs disconnected. Do not leave set playing very long. This is just to verify problem. Your welcome, Russmann.

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1 Answer

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What do you mean by covers? do you mean focual lens? did you replace them to there proper place (red to red, green to green, ect..). each has it's own focal legnth and must be placed on the correct gun. did you adjust (accidentaly) the red centering polls?if you did please have a tech readjust them you can end up with convergance amp overload. did you try to converge the lines? if they did not move when adjusting you may have a convergance amp problem. read my motto

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sounds like convergance amp ic's see links below
· http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
· http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
· http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/
· http://www.hdtvoice.com/voice/index.php?s=

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1 Answer

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I had the same problem with the same model earlier this year. You need to have the convergence module replaced on a circuit board inside. Expect to pay $400-$500 to a qualified repair shop.

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