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

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IC replacement Question

OK had the convergence issue. replaced both ICs with same (stk392-110).

Turned her on and got the power light blinking three times issue.

Tried to resolder the ICs but I think I burnt the board with the iron.. right where the pins come through. Would this be an isse?

Ive ordered another set of STks

Main question is what is the part number for the board the heat sinks and high voltage is connected to? The righ side board if looking at the TV from the rear. Starts with TNP.

If I order this board from PANNY, would it include everything (heatsinks, ICs, resisitors etc etc)?

Im looking for a plug and play solution. No soldering. Simply remove old board, insert new one, connect existing cables and fire her up...

Hey wait, how would I remove the high voltage supply from the old board? I didnt see any screws or anything....

Anyone?

Posted by on

  • pannykiller Apr 07, 2008

    Thanks Jaime867.



    If its TNP2AH046S (the right main board PN) then PANNY does sell them but I dont know if thats it. And I also dont know if this will be a plug and play fix...



    The PTS site does not show availability on the above PN.



    Im going to try replacing the ICs again but I dont know if my sub-par soldering skills effectively fried the board... and theres no way Im going to be able to remove the high voltage unit without killing myself (and anyone else in the room)

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Check this site for more info on a rebuilt board becuase I do no think Panasonic will have new boards.

Posted on Apr 07, 2008

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1 Answer

Convergence


Check your solder connections for any bridging of the IC pins.

Jan 14, 2010 | Panasonic PT-47WXC43 47" Rear Projection...

1 Answer

Blinking power light


Hi,
Power light blink 3 times shows that convergence out ICs got defective and need to be replaced.
If you are handy with electronics stuff repair and can solder parts in circuit board with proper tools then replace two big black ICs, convergence out, mounted on aluminum heat sink.
Or call local tech to fix it.
Let me know if you have additional question.
Thanks.

Dec 23, 2009 | Panasonic PT-53TW53 53" Rear Projection...

2 Answers

Tv turned itself off. turn power back on, picture


Your TV is experiencing a convergence issue as indicated by the 3 blinks. The only way to fix this is replacing the convergence ICs. It is not a hard task to replace these ICs. You just need to know how to solder and work on printed circuit boards.

The convergence ICs are mounted on a large heat sink and are marked with codes starting with the letters STK and there are two of them. You need to replace both.

Look for the heat sink with two ICs mounted on it and check the markings.

Once found, cut the IC legs with a small side cutter and unscrew it from the heat sink. Remove the legs left soldered on the board.

Take note of the IC markings for ordering the right part and how it was installed. Don't forget to buy along with the IC a thermal compound.

Check the pico fuses on the same board. Most likely you will find a blown one. These fuses look very much like a resistor, not like the usual transparent fuse, and usually yellow.

Once you have the replacement ICs, put it on the board in the same way as it was installed before. Make sure the screw holes are aligned before soldering the legs into the board.

Put a reasonable amount of thermal grease/compound between the ICs and the heat sink and fix them with the screws.

Double check the board for any splash of solders that might cause a short circuit and damage the board.


Dec 07, 2009 | Panasonic PT-47WX53 47" Rear Projection...

1 Answer

Panasonic (PT-56HX41PF) rear-projection tv with no picture


The three blinks indicates a convergence IC fault. The convergence ICs must be replaced with the manufacturer replacement part. Use only the original replacement part. Your set uses STK392-110 convergence ICs.
These ICs are mounted on a large heat sink. Yes, you can replace it yourself and save few hundred bucks. But you must be knowledgeable enough on how to solder, resolder and use a multimeter.
You will need:
  1. Convergence ICs
  2. Heat sink grease or thermal compound
  3. Soldering iron
  4. Solder lead.
  5. Digital multimeter
  6. Solder pump
  7. Small side cutter
Feel free to inform me if you decide to replace the ICs yourself

Dec 03, 2009 | Panasonic PT-56HX41 56" Rear Projection...

3 Answers

Power light blinks off and on, nothing else


try unplugging the three convergence yokes then try powering up the set to see if it powers up. If it does replace both convergence ICs

Feb 03, 2009 | Toshiba 55H70 55" Rear Projection...

1 Answer

CONVERCENCE PROBLEMS


did you replace the convergence resistors with the ICs? Often the resistors will need to be replaced also when new ICs are installed. 3 blinks means convergence Failure so its either the solder connections on the ICs or the resistors need replacement. If you need more assistance please let me know.

Sep 27, 2008 | Projection Televisions

1 Answer

Failed resistor


those are the convergence feed resistors. # blinks on a panasonic means convergence IC failure. You will need to replace the two stk392-110 convergence ICs and the six resistors. You can get replacement ICs and resistors at the following link.
http://servicemanuals.vstore.ca/

Sep 06, 2008 | Panasonic PT-53TW53 53" Rear Projection...

1 Answer

Blinks


you need to replace both convergence ICs that is what the 3 blink error code is for your model. You need two STK392-110 Convergence ICs you can get replacement ICs at the following link with free instalation instructions.
http://servicemanuals.vstore.ca/

Aug 13, 2008 | Panasonic PT-53WX42 53" Rear Projection...

1 Answer

Help


It sounds as if your convergence ICs have failed again,However if you didnt replace the convergence resistors with the ICs that is most likely the cause of early IC failure. There is a quick test to determine if the ICs have failed. Remove the front speaker panel and access panel up front, and you will see the convergence panel with the two black heatsinks. Directly in front of those heatsinks are three wire clips that are for the convergence yokes, Unplug those three wire plugs and try turning on your set. If it comes on the ICs have failed, and the ICs and resistors should be replaced as a kit. You can get the repair kit for the JVC rear projections at the following link with free instructions. Heres the link.
http://servicemanuals.vstore.ca/
Let me know if you need more information.

Jul 23, 2008 | JVC AV-56WP74 56" Rear Projection...

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