Question about Panasonic PT-47WXC43 47" Rear Projection Television

2 Answers

Convergence problem you fixed on your Panasonic

I'm facing the same issue on my Panasonic PT-47WXC43 TV. I was quoted $400 to repair, and I think not. LOL At any rate, I am an old Air Force electronics tech, former depo level monitor repair tech turned Database Geek..and this doesn't scare me too much to give it a shot and save the cash. Only thing is, I've never seen anyone work on one of these and am not sure which capacitors might zap me and so forth. I know we had one specific one in the color board of the 15' gateway monitors that would hold a charge and zap the **** out of you if you weren't paying attention....did you run in to anything like that? Can you think of anything else I should be on the lookout for? I'm good with a soldering iron, so I'm not worried about the actual ICU replacement.

Thanks for any help..and especially for your complete guide to replacing these you posted. That was awesome!

Cheri

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  • cherip35 Aug 03, 2008

    Thanks for all of the help! I'll let you know how it goes. I've ordered the chips, and should have them in a few days. The only difference I can see in the description of yours is that there is only 1 screw I can see that holds the chips on to the heat sinks. It has like a clip keeping them in place and a screw holding the clip...so, I'll see how that pans out. :o)

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Your TV most likely has a Convergence Chip Failure ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem

  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
convergence problem you fixed on your Panasonic - 701cb04.jpg

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2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together convergence repair kits for most models.

The kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, etc. Everything you will need to do the repair yourself.

Posted on May 14, 2009

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There are essentially 2 boards in this TV. One has all of the high voltage stuff on it and connects to the tubes. The other has stuff like these convergence ICs and other electronics. While the boards are electrically connected, none of the high voltage lines run to the convergence board, so you should be ok.

To be safe, I left the TV off and unplugged for about a day before I started the replacement, but as you read in my saga, I didn't get it right the first time. By then I was pretty comfortable with the electronics and didn't worry about the high voltage lines. But take the obvious precautions like not touching things you shouldn't, and if you feel it necessary, maybe wear gloves.

The only other thing I can say to be careful of, is that the washers on the screws holding the heat syncs to the ICs will not come off, so be prepared to replace them after cutting them off. Also the heat syncs get really ot in operation, so don't touch it after it's been on for a while.

Let me know if you run into any trouble. Set is still working fine a month+ after fix now.

Posted on Aug 03, 2008

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1 Answer

My tv looks like its stuck in 3D mode or something how can that be fixed


You will need to replace both STK392-110 Convergence ICs and also check and possibly replace the low ohm resistors. You can get the PT53WX53 convergence repair kit which covers your model. The kit contains the ICs , resistors and the CD with repair instructions. The kits available from www.tvrepairworld.com

Jul 22, 2011 | Panasonic PT-47WXC43 47" Rear Projection...

1 Answer

I have a panasonic PT-47wxc43 projection tv. I have green and purple halos coming up from the bottom. The screen has purple and green double images which are worse from the bottom up.


Hi,
This problem is due to convergence output ICs failure and both chips will be replaced to fix the issue.
There are two big black ICs installed with aluminum heat sink on deflection board, these are convergence output ICs and will be replaced to correct the problem, it is common problem of rear projection tv.
Below image of deflection shows ICs (marked in red) that are need to be replaced.
IC number is STK392-110 and available with Part Store for $32 each.
Click above link to see an image of IC.
If you are handy with electronics stuff repair and can replace parts in tv circuit board then can replace these parts yourself or ask local tech to help you.
Hope these info will help you.
Let me know if you have additional question.
Thanks.


May 25, 2010 | Panasonic PT-47WXC43 47" Rear Projection...

1 Answer

Panasonic PT-47WXC43G green ONLY is bowed on bottom and top


Hi,
It still convergence chip problem, check big resistors nearby these chips that would be open or devalued and causing problem, specially in green convergence area, your green tube/ gun is just fine and just not getting convergence output signal to show correct image.
I would suggest to download service manual copy of this tv for small fee from any website and fix the issue with schematics help.
Thanks.

May 02, 2010 | Panasonic PT-47WXC43 47" Rear Projection...

1 Answer

Convergence and distortion problem.


This sounds like convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually $200-$400 Be sure to vote/rate me if this helped Thanks!
See link for more detail
http://www.ehow.com/how_4575598_yourself-projection-tv-repair-convergence.html

Oct 31, 2009 | Panasonic PT-47WXC43 47" Rear Projection...

1 Answer

Please, can anyone tell me which STK39x-xxx convergence ic's are used in a Panasonic, rear projection TV, model PT-47WXC43


Your STK numbers are on the ones in your TV Big black ICs STK if they are 110s,120s,150s Use the 180s instead.better ICs For EXample STK392-110 ect.....

Feb 20, 2009 | Panasonic PT-47WX53 47" Rear Projection...

1 Answer

Convergence problem and cropped picture


your tv is under convergence problem usually we need to replace 2 big integrated circuits in the convergence section, at this point you may need a good tech to come over to your home

Nov 13, 2008 | Panasonic PT-47WX49 47" Rear Projection...

1 Answer

Panasonic Rear Projection TV PT-47WXC43


I have a Panasonic PT-47WXC43 47 in Rear Projection. It went off, on picture, no sound. 

Jul 13, 2008 | Panasonic PT-47WXC43 47" Rear Projection...

1 Answer

No Picture


I would start with the convergence ic's
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Jan 16, 2008 | Panasonic PT-47WXC43 47" Rear Projection...

1 Answer

Tv wont turn on


3 blinks corresponds to convergence ICs
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Nov 11, 2007 | Panasonic PT-47WXC43 47" Rear Projection...

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