Question about Sony Grand WEGA KDF-55XS955 55" Rear Projection HDTV

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STk for Sony Wega

I have 55" sony wega that i am pretty sure needs new stk chips. How do I find out what stk chip I need for the tv?

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Philip Frye

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Actually if you can remove them from their heat sinks and wipe off the heat sink goop, the actual part number will be listed on them.
Blessings,
A/V Media Guy

Posted on Nov 22, 2009

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I have a KDP51ws550 tv that has convergence problems. Flash focus would not work and neither would manual convergence. I replaced the both convergence ICs and checked the pico fuses, turned the unit back...


Check your soldering. Check the vertical power board on the far left when looking from the back. It has fuses on it as well.

Depending on quality of STK chips, they could have been bad or failed right away. Best things is to look at the schematic, verify what colors you can move and see which STK chip is not functioning.

If both chips are not function after replacement, likely a fuse. Be sure to verify the resistors next to the STK chips.

Mar 06, 2011 | Sony Grand WEGA KDP-51WS550 51" Rear...

1 Answer

Sony model #kp51ws500. Common problems for screen appearing warped


Need more details about how the screen is appearing warped.

if you have color separation and distorted image (warped,bowed, etc), then your Convergence ICs have failed. It is very common on rear projections. The solution is to replace the STK chips, check fuses and the resistors next to the STK chips. Replace as necessary and re-align via the service menu. It is about a $300 repair at a tv service center. You will need the service manual if you decide to do this yourself.

Try This:
When you notice the symptons Use this simple test to verify.
Go to the users menu on the tv.
Look for the converge option probably under setup or video setting. Converge is short for convergence to align the red and blue colors to the green color.

If you cannot move the red either horizontal or vertical, then the STK chip has failed for red section.
If you cannot move the blue either horizontal or vertical, then the STK chip has failed for the blue section.

If you can move both in each direction then the problem is something else.


Note if one STK chip fails, you replace both regardless.


Note: The STK chips are black about 3 inches long and will be mounted against a large aluminum heat sink (metal fins). They have about 20 pins on them. I believe they are STK392-560s in that set.

Feb 25, 2011 | Sony KP-51WS500 51" Rear Projection...

1 Answer

I have sony tv kp-65wv600. It has problems. color and video is blurry, double vision, letters are curved


You have a convergence failure.

Convergence IC failure is very common. The solution is to replace the STK chips, check fuses and the resistors next to the STK chips. Replace as necessary and re-align via the service menu. It is about a $300 repair at a tv service center. You will need the service manual if you decide to do this yourself.

Try This:
When you notice the symptons Use this simple test to verify.
Go to the users menu on the tv.
Look for the converge option probably under setup or video setting. Converge is short for convergence to align the red and blue colors to the green color.

If you cannot move the red either horizontal or vertical, then the STK chip has failed for red section.
If you cannot move the blue either horizontal or vertical, then the STK chip has failed for the blue section.

If you can move both in each direction then the problem is something else.


Note if one STK chip fails, you replace both regardless

Feb 24, 2011 | Televison & Video

1 Answer

The screen shows a picture that resembles a film negative. No colors are distinquishable. Replacing the lamp did not solve the problem.


The TV's convergence is out of alignment, because the colors are out of focus, thus the colorless picture. Try replacing the STK convergence chips. Check online for the correct STK chips for your Sony model.

Feb 24, 2011 | Sony Grand WEGA KDF-50WE655 50" Rear...

1 Answer

My 65 inch sony tv half the screen is having colors like 3 d


Your Convergence ICs have failed. It is very common on rear projections. The solution is to replace the STK chips, check fuses and the resistors next to the STK chips. Replace as necessary and re-align via the service menu. It is about a $300 repair at a tv service center. You will need the service manual if you decide to do this yourself.

Try This:
When you notice the symptons Use this simple test to verify.
Go to the users menu on the tv.
Look for the converge option probably under setup or video setting. Converge is short for convergence to align the red and blue colors to the green color.

If you cannot move the red either horizontal or vertical, then the STK chip has failed for red section.
If you cannot move the blue either horizontal or vertical, then the STK chip has failed for the blue section.

If you can move both in each direction then the problem is something else.


Note if one STK chip fails, you replace both regardless.

Feb 20, 2011 | Sony KP-51HW40 51" Rear Projection...

2 Answers

I have a Sony KDF-E50A10 Grand WEGA LCD. The picture cuts in and out and the green standby light flashes. One expert said the STKs need to be replaced??? How can I do this...please advise in detail.


Replace your lamp. Your DLP set does not have Stk ic's in it. I don't know what expert told you that but I can assure you he has never worked on a TV. You can purchase the lamp from www.dlplamps.com

Jan 18, 2011 | Sony Grand WEGA KDF-55XS955 55" Rear...

1 Answer

My sony tv is discolored and doubled


YOU NEED REMPLACE 2 PARTIES -- STK-392-560

Jan 07, 2010 | Sony Grand WEGA KDP-57XBR2 57" Rear...

1 Answer

Is replacing the stk chip something that a lay person can do or do i need a tech


first: KDF55XS955 does not use a STK chip.

What is model number and problem you have?

I am here to help.

If this has helped you rate this solution as I do this here for free.

SD TECHc6b9648.jpg .

Dec 20, 2009 | Sony Grand WEGA KDF-55XS955 55" Rear...

1 Answer

Stk392-110 chip is in my tv. can I use stk392-150 instead?


The model number you indicated: WS-55809 does not use the STK-392-110--IT USES TWO STK-392-570 CHIPS.

IF WHATEVER SET YOU HAVE USES A STK-392-110 YOU CAN USE THE STK-392-150 TO REPLACE IT--it is a higher current device than the 110 chip---there are some others even stouter but some create more problems.

I have used the 150 chip on several sets for the 110.


If this information helps you rate this solution as I do this here for FREE.

SD TECH.

Nov 14, 2009 | Mitsubishi WS-55809 55" Rear Projection...

1 Answer

Picture is distorted from center on my 65" Sony projection TV.


hi. this will be an easy fix for you if you are a good solder. you will need to replace the convergence chip that is located on the PC board(main). this chip is damaged and it has failed due to this damage that has occurred. click below for your new convergence chip(stk).

CLICK HERE

May 21, 2009 | Sony Grand WEGA KDP-65WS550 65" Rear...

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