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Posted on Jul 21, 2008
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Projection T.V. Picture

The picture on the T.V is bowed toward the center, with the top and right side bowing the most. The bottom and left side are not so noticiable, and there is double picture(the 3 colors aren't lined up right)

  • samw4444 Apr 03, 2009

    Same problem. Is it similar to "blue line won't adjust" post for the same TV? Looks like there is a suggested solution but that one person tried it and it did not fix the problem.



    I also noticed the TV used to correct itself (sometimes on its own, sometimes after a hard whack on the side), so wondering if it's something mechanical? I'm about to open it up and see...

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1 Answer

Anonymous

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  • Hitachi Master 5,138 Answers
  • Posted on Dec 05, 2009
Anonymous
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Replace Both of your STK ICs convergence ICs STK392-110 use 150s Better ICs Call Mats 1-800-628-1118 Also RK42 RK46 RK48 RK50 RK54 RK58 RK60 will have to get back to you on resistor values

  • Anonymous Dec 05, 2009

    After you replace Both ICs and Resistor RK42 3.3ohms RK46 1.8ohms RK50 2.7ohms RK54 1.5ohms RK58 3.9ohms and RK62

    2.2ohms you then can adjust convergence if Needed by pulling off Front bottom Panel Board Their in Front of your convergence Board is a small blue contact switch with TV on press for 5secs then release you should now have Convergence Pattern showing!

  • Anonymous Dec 05, 2009

    Then you may need to just resolder your ICs if it corrects itself at times,and resoder any poor connections you see on Board .

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Related Questions:

0helpful
1answer

Picture Bowed towards the center

It is a convergence problem, probably one of the convergence ICs has blown and must be replaced. Call the number in the last pages of your user manual to get repair service in your area.
2helpful
1answer
0helpful
1answer

Me again

With the bow in it it's likely the convergence has failed... Where did you purchase the amps that you put in it? Did you use a good heat sink grease to mount them?? Did you really scrutinize the resistors in the feed and return circuits???
Bill
0helpful
1answer

Problem with convergence

bad convergence ic's
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
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Bowed picture

malfunction of the pinchusion circuit.check pinchusion diode and transistor and pincushion ic
1helpful
2answers

Help with bowing

Usually consumer described bowing is bad solder connects

on pins of convergence IC's. If the effort is made to pull the center PC board out,then replace both Stk392-570 IC's for

durability.

 

Note: V-Pin amp and pin out relates to left/right side bowed-in

  issues,a problem not usually found on your model.

1helpful
1answer

Hitachi projection tv model 3 51gwx208

Do you mean that at the top of the picture, the red color has shifted downward, bowed towards the center? If that is what you see, one color suddenly bows toward the center on any side of the picture, then it means that one of your convergence IC's has burned out and needs to be replaced. It is a good idea to go ahead and replace both STK392-110 IC's with the newer improved STK392-150's. If you have never replaced convergence IC's and realigned the convergence circuits in a projection TV then allow a qualified tech to handle it for you.
0helpful
1answer

Picture Distortion

you have a convergence problem.. If you understand how this works then you can go into the set find the convergence ic's and replace them and sometimes you need to do some alighnment as well. Its always best though to let a service tech do a job like this as he will have all the proper equipment to adjust and troubleshoot the set Good luck
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