Question about Panasonic PT-51HX41 51" Rear Projection Television

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Colour convergence I recently had a repair man in and he changed the two output cu's and it didn't work so he said it could only be fixed by replacing the motherboard. The problem was with the blue, but then he left and I tried the blue again and got it lined up and it worked fine. An hour later I turned it off and left, when I came back I turned it on and the red colour is is now the problem. Is it the whole board that I have to replace for $550 + labour, or am I getting screwed????

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Re: colour convergence

If you are not comfortable with desoldering/soldering STK or any electrical board components, I would find you a repair place that would fix your convergenece issue. Some will come out to your home ($65 plus just to come out) and other will take just the board and repair at reasonable not to exceed $400.

Posted on Dec 20, 2007

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Toshiba 43VJ22P, the colours blue and red go in double vision, tried convergence didn't work. can you help please?

You will need to replace the Convergence ICs ,they are Big Black ICs and will have part number on them. Example STK392-110
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Several years ago we purchased a Philips 60" Rear

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If the unit is chirping your convergence amps are out again,or you have a shorted Horzontal output transistor. Not likley for horz output to go out after convergence repair. If he did not replace the 6.8 ohm resistors along with the convergence amps the convergence amps would overheat and short out again.This would explain why the corner would not adjust out. Not a very good buisness practice on his part.Here today gone tomorrow?

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Good Day, harri1234;
Sounds like a convergence problem.
Convergence Output IC Failure
Corrective Action: Replace the defective Convergence Output IC Part Number 23905094 (STK392-110) using the revised “T” version IC Part Number 23135090 (STK392-110T). When Convergence Output failure is
detected, it’s recommended that both IC’s be changed to the “T” type IC
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change your convergence ICs that should solve your problem.If you need more info let me know.

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The convergence IC or in a sense ,amplifiers and the resistor are output resistors... if they are burning up the current going through them is spiking too high... TO me this is an indication that the "convegence yokes" are shorted. These are coils around the tubes that control convergence. I would suspect maybe that these are shorted to ground somehow. This is my first guess for this problem

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