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

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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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Re: Sony TV KP-46WT500

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

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.


69189a5.pngSOLUTION #1

What you will need to do is convergence. You can get a repair kit from . 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 fluid changed.

TV set after fluid change



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

Posted on Mar 09, 2012

Re: Sony TV KP-46WT500

Sony does not back up their product. No more Sony for me.

Posted on Jun 27, 2007

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1 Answer

Why has my hd lost its luster? not asclear, smoky picture. its a sony rear projectile tv hd 46in. model kp 46wt500

usually these tvs will need a tune up from time to time. You can try to push the flash focus button on the front and that will fix any minor misalignments, but to really fix it, it likely needs the crts focued and a convergence re-alignment. sonys are tricky, but if you feel savvy and want to dive in, let me know.

a tune up may run $50-150 from your local repair shop

Jun 14, 2010 | Sony KP-46WT510 46" Rear Projection HDTV

1 Answer

The tv all of a sudden went out of focus and the Flash Focus will not re-set it any idea on how i can focus without expensive service call?

It looks like you have a convergence or vertical problem. if the picture is showing kind of 3 d or warped, its convergence.

Feb 22, 2010 | Sony KP-46WT500 46" Rear Projection...

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Tried to use 2002 Sony TV as large monitor for webinar. Got the TV to accept signal but could never size the screen correctly. It only showed part of the computer image. Gave up on using it as large...

Symptom shows that it is convergence out chips failure that causing misaligned images on screen. Please replace convergence out chips in tv to get converge picture.
Question shows it is Sony KP-46WT500, if it is different model let me know please.
I can provide you more technical assistance if you wish to repair tv by yourself.

Feb 09, 2010 | Sony KP-46WT500 46" Rear Projection...

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

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.

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

Power surge may have blown tv- Sony KP-46WT500- worth fixing?

Take a look at my post on Convergence IC replacement..Thank you GURU JAY

Feb 18, 2008 | Sony KP-46WT500 46" Rear Projection...

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Color is messed up

sounds like bad convergance ic

Dec 14, 2007 | Sony KP-46WT500 46" Rear Projection...

1 Answer

Picture curved and three pictures - one per color

convergance amp ic are bad.
can you confirm the make and model.

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

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