Question about Sony KP-51HW40 51" Rear Projection Television

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Arched convergence I have a Sony 51" rear projection tv. I dont know the exact model number because its faded on the rear. The picture is concaved at the top and bottom. The colors are also off. Its too heavy to take to a tech and Im too cheap to pay someone to come out and look at it. I no longer have the original remote either. Does anyone know what the problem might be or where I can get a replacement part. I googled "sony 51" and this is the model that my tv looks like....if it helps "KP-51HW40"

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Re: arched convergence

You can order convergence amps for the unit. If you open the unit and find that there are STK392-110 in the unit, you'll want to order STK392-150 to replace them with as they are less likely to fail.

You can always open the unit and check the convergence amps to see what part they are and then Google that.

Posted on Nov 25, 2007

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Re: arched convergence

Replace convergence IC's (both) STK392-560 and any open pico
fuse device 3.15 amp soldered-in....moderate to above-average
technical skill needed...................T.

Posted on Nov 25, 2007

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1 Answer

Picture is distorted looks concaved

Sounds from the model number here like convergence problem.

I can tell you what is involved and if this problem not a lot of money to fix--see attached photos of this kind of problem and respond with a make a comment button on this page if you want help.




Apr 22, 2012 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Bright blue concave archs accross top of the screen with some yellowish ghosts on any lettering accross bottom of screen. This is a hitachi model 53fdx01b rear projection tv that normally has an excellant...

Sounds like a convergence failure, here is a tutorial I made:
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Three pictures red green & blue and it looks concave

Install the Sony type 1 convergence repair kit available from the kit includes the components and the cd with instructions.

Jun 30, 2010 | Sony KP-51HW40 51" Rear Projection...

1 Answer

All letters and figures in the picture are duplicated with color

Ur tv have convergence problems,it dead.U must have soldering tools,solder and know how to do soldering to solved convergence problems.U must replaced 2 STK convergence ICS,and some or all it resistors.Tries websites like, to buy a convergence kit to repair it ur self.The shop will cost u $300-350 for parts and labors.

May 13, 2010 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Aproximately 50% of the Tv's image is distorted by a green and red doubled image. Can we fix this

Yes, this problem can be fixed if you are handy with electronics stuff repair and can solder parts in circuit board easily with proper tools.
Replace convergence out ICs to get converge picture.
Let me know exact model number and brand of your TV for further info as question shows its Sony KP-51HW40 tv.

Jan 08, 2010 | Sony KP-51HW40 51" Rear Projection...

1 Answer

The blu display on my sony 65" tv is arched, making the convergence adjustment in-effective.

its failure of Convergence Out IC chip and requires replacement.
TV has 2 IC chip in convergence circuit and I would recommend to replace both at same time.
Let me know exact model of Sony 65" TV to provide you more technical info.

Mar 14, 2009 | Sony KP-51WS510 51" Rear Projection...

1 Answer

The picture is out of foucus

If your tv is Sony KP-51WS500, then its rear projection tv and problem seems in convergence stage.
Please confirm model number to guide you further.

Oct 11, 2008 | Sony KP-51WS500 51" Rear Projection...

1 Answer

Color distortion and arched picture

It is problem of failure of convergence ICs or related circuit. Please confirm model number of your TV that is Sony KP-57WS500 to help you out.
It would be nice if you could past TV snap shot here for easy understanding.
Thank you.

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2 Answers

Concave picture

more then likely your convergence ic's have bad solider connection and need to be resolidered hope this helps

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