Question about Panasonic PT-53WX53 53" Rear Projection HDTV-Ready Television

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Panasonic PT-53WX53 won't power on, light flashes 3 times

Was watching TV the other night on our Panasonic PT-53WX53 53" RPTV, when the picture suddenly went green for a few seconds, then the TV shut off. If I attempt to turn it on, it will start up then immediately shut down, and the power LED blinks red 3 times.

I've read here and elsewhere on the internet that this is probably due to a fried convergence IC, the
STK392-110. I've just ordered two new ones of these. I won't be able to try them until Sunday, but I am planning on removing the old ones from the PCB and soldering the new ones in its place.

I also see that there is a convergence repair kit sold on the internet that contains those two IC's and 6 2.2 ohm 2 watt resistors. I'll test the current resistors ( R7048, R7049, R7050, R7053, R7056, R7059) to make sure that they aren't fried either.

Am I on the right track? Once I replace the IC's, will the convergence be whacked up? Will I be able to adjust it via the user menu, or will it be necessary to go into the service menu (and if so, how do I do that)?

Thanks in advance.

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  • andrewwski Aug 02, 2009

    Fixed it! Turns out it was the convergence IC's, I replaced both and all is well. Tested all 6 2.2 ohm resistors and they checked out fine, TV powers up and I adjusted the convergence back to where it should be.

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SOURCE: i had projection tv.modle#pt-47wx49.i had

R7050 and R7059 are both 2.2ohm 2watt Resistor R7001 is either 82 or 8.2 ohm if you give me the colors of the bands on that resistor I will let you know for positive what the value of R7001 is

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SOURCE: pt-53wx53 Panasonic Projection TV Turns off

OK< likely one of the new chips are bad or when soldered in you shorted pins at that time----3 blinks is short protection and you are going to find ONE of the light blue 2.2 ohm resistors is open (usually discolored in middle).

Having changed hundreds of chips in this model once in a while you get a new one that is bad---replace both again.

How did you get at them----remove the board or pull the light box?

Posted on Oct 26, 2012

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1 Answer

Pt-53wx53 Panasonic Projection TV Turns off


OK< likely one of the new chips are bad or when soldered in you shorted pins at that time----3 blinks is short protection and you are going to find ONE of the light blue 2.2 ohm resistors is open (usually discolored in middle).

Having changed hundreds of chips in this model once in a while you get a new one that is bad---replace both again.

How did you get at them----remove the board or pull the light box?

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Hi,
3 times red light flashing is an error code that indicates problem in convergence output section, please check and replace convergence output chips and pico fuse nearby. Chips replacement in circuit board requires soldering work and local tv repair shop will help you if you are not familiar with soldering.
Hope this will help.
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3 flashes high voltage shut down, if you like I can show you what parts need replacing contact me at the link below....
http://tvtechwork.webs.com/

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1 Answer

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1 Answer

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