Question about Panasonic PT-47WX53 47" Rear Projection HDTV

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Mistaken: Not the green gun convergence at all. confusion sets in...

Well, as it seems, the help I've recieved on this site has been awesome. Thanks to thaMp3 doctor. I went ahead and did exactly as you said. On my particular brand TV, It will bring up the menu on convergence. On that option, I ran through the motions of centering the picture itself and with some other help i've recieved through researching, found, what I believe to be the advanced convergence option menu. I went ahead again and aligned the crosshairs 1-9 on the green? No problems there. moved on to the red, no problems there. moved on to the blue..."****" As it turns out it was not green at all, and as I found out also that same day, the green gun is, I guess the main. This is now, Positively, the problem, and I really need help. I spoke with a tech in my local area, and he has stated that I will not be able to find ANY replacement parts at all, for this particular problem. He believes it is certainly a problem with the convergence curcuitry, but wasn't sure how to proceed in advising me. Afterall, he gets paid to actually come out and repair these things. At the risk of sounding very new, I'm kindof hoping (praying) someone CAN advise me. I have been in contact, several times with PANASONIC tech support, but to no avail. What is actually happening is the blue's top row of convergence reference #'s start across 1-2-3 the second row (middle) 4-5-6 and of course (bottom) 7-8-9. the top 1 -3 are bent, higher left (1st), lowering in the middle (2nd) and going higher to the right (3rd). The blue crosshairs themselves (+) are tilted (almost askew on each side of the crosshair) almost like someone took a plus sign and bent each side of it up. The middle row 4-6 are fine. the bottom row 7-9 start lower than the focused crosshairs (7th), and tilt upwards as they number up to the 9th. they also are askew (each bent)

I am banging my head against a wall everywhere else I go for info. Nobody seems to really know anything, at least that I can work with. I"m sure it might be a good idea to start with a service manual, but I just hav'nt gotten that far yet. can ANYONE point me in the direction I should be going. Specifically what board, or part of what board will i need to repair, and is it possible to do......PLEASE....If someone could point me to a website I hav'nt seen yet for help too, will be helpfull as well. Thankyou so much so far...

sincerely,

Jim (going bald, from pulling)

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  • Jim Mar 12, 2008

    THANKYOU SOOOOO MUCH, I will look into this. I am trying to do this at a very minimal cost, as I am moving and re-aquiring many of the items I gave away because the now, ex, had better stuff. Money, now, is very tight. and this is the only TV I have for the moment. Your advise is well taken and I will research those parts you described. my only question now is what you meant by placing the data well outside the tolerance of the amps? How is that done exactly. I also, cannot be absolutely possitive I reached the service menu, so if you could be SO kind to just give me a briefing on that too. I don't want to dilly dally. I would just like to be able to dive right in, with minimal confussion....:) And THANKYOU AGAIN!!!

  • Jim Mar 12, 2008

    Also, do I need a part # for those pico fuses you mentioned? I did in fact find the other parts you listed, THANKYOU...

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The problem you are having is the convergance amplifiers have failed and may be some support resistors and pico fuses. the amplifiers are STK392-110 but STK392-120 can be used and are better for load handling. these are located on very large heat sinks. there are two of these IC's and both should be replaced.this is the most common failure in a projection tv. if you got into the service menu for multi point convergance setting you may have place the data well outside the tolerance of the amps and they may blow again. if you did not get into the service menu reset the convergance to factory reset (this is in the cutomer menu) before you replace the amps. the panasonic part # for the amps is C5AA00000203 . you can get it at www.vancebaldwin.com . if you don't have the skills to repair this then you a tech should be called the cost of the repair maybe around $350.00 to $375.00

Posted on Mar 12, 2008

  • Robert Johnson Mar 13, 2008

    after looking at the schematic there are no pico fuses used in this set.

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Posted on Jan 02, 2017

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