Question about Sony KP-46WT500 46" Rear Projection HDTV-Ready Television

2 Answers

Sony TV KP-46WT500

My KP-46WT500 after three years of average use lost its convergence. I tried flash focuse, no use. Could sombody put a pictur of IC STK 392-56 part # 87401908 on this sit and let me know if a novice person can replace this item. Thnak you

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Projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Below are more details for both items. Also, complete repair kits with instructions and repair support are avail from site such as www.TvRepairKits.com

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....

  • 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.
  • TV shuts off after powering on. The power light will blink. TV may also make a chirping noise.
Here are some pics of convergence problems.


Sony TV KP-46WT500 - 7859b01.jpg

e87380c.jpg
SOLUTION #1

What you will need to do is convergence. You can get a repair kit from TvRepairKits.com . It includes replacement parts,step by step instructions, support, etc.

Common Problem #2) CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluSony TV KP-46WT500 - 578ba6c.jpg

578ba6c.jpg

65af323.jpg

69189a5.pngSOLUTION

What you will need to do is replace the coolant and clean the crt. You can get a repair kit from
TvRepairKits.com . It includes replacement coolant,step by step instructions, support, etc.

Posted on Mar 09, 2012

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Posted on Jun 27, 2007

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Posted on Jan 02, 2017

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1 Answer

Image is showing in all three colors


Tv have a problems known as a convergence problems,it dead.The tv have colors lines R,G,B mis alignment,have colors shadows pictures or 3D pictures look alike.The tv convergence board have dead 2 STK convergence ICS and some or all of it resistors.These parts must be change on the tv convergence board to solved the tv picture convergence problems.The shop,will cost u like $300-350 for parts and labors.

Nov 07, 2010 | Sony KP-46WT500 46" Rear Projection...

1 Answer

The three colors on our set no longer converge. When we do the "flash focus" it goes through the routine but nothing is changed afterward. If we try to do manual convergence nothing moves or changes.


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 charge between $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 23, 2009 | Sony KP-46WT510 46" Rear Projection HDTV

1 Answer

Half of the screen is clear and left side of the screen is blury


Its a Common Problem with Projection Tv's ~ If your flash focus is not correcting the problem, And It can Not be Adjusted in your service menu: under Manual Convergence, your IC chips and maybe a few resistoirs may have failed and need to be replaced!... onegeo

Jul 07, 2009 | Sony KP-46WT500 46" Rear Projection...

1 Answer

Red tint


Your TV most likely has one or more possible problems.

Problem #1: 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.
701cb04.jpg
77ea520.jpg
f0900cb.jpg
Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.


Problem #2 CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

578ba6c.jpg
TV set after fluid change

65af323.jpg

2c07611.pngSolution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.

Apr 03, 2009 | Sony KP-46WT500 46" Rear Projection...

1 Answer

Sony KP-46WT500 picture is distorted


you either need to reconverge the unit (auto focus) or you need to replace the converge chips-stk-xxx-xxx don't adjust anything.

Nov 05, 2008 | Sony KP-46WT500 46" Rear Projection...

1 Answer

Convergence issue


You need to replace both STK392-560 convergence ICs and some of the 4.7 ohm 1/2watt resistors. You can get replacement ICs and resistors at the following link with free instalation instructions.
http://servicemanuals.vstore.ca/

Jul 23, 2008 | Sony KP-46WT500 46" Rear Projection...

1 Answer

Model Sony 61HS30


no, if touch focus didnt correct it, you will need to replace the convergence ICs

Mar 20, 2008 | Sony KP-46WT500 46" Rear Projection...

1 Answer

Picture curved and three pictures - one per color


convergance amp ic are bad.
http://www.techlore.com/forum/thread/18970/Sony-KP-46WT500-Convergence-Repair/
can you confirm the make and model.

Nov 24, 2007 | Sony KP-46WT500 46" Rear Projection...

1 Answer

Convergence


You need to go to http://www.partstore.com, enter your model number,look up under that model number STK #(@-560. Order Two of the part number 874901908. These also need heat sink grease in the back of these ICs when they are replaced. If you know how to solder, then good luck, and please be carefull!.. Please do not forget to rate this thread.

Nov 26, 2006 | Sony KP-46WT500 46" Rear Projection...

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