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

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Text/images overlap each other in 3 colors, 3D distorted picture

I have a Sony KP-51HW40 projection TV where recently the picture went bad. The picture bends inward in the middle on top and bottom, and the text and images overlap each other in 3 different colors giving a 3-D effect. In the past I've had to adjust the control knobs on numerous occassions to get rid of either red or green horizontal lines, but this problem is different. I tried adjusting those same knobs again, but that had no effect on the 3-D distorted and bent picture. The red LED light is blinking 5 times per series repeatedIy. I would like to keep the TV and fix it, but I don't want to spend a lot of money. Can you please tell me what the issue is and estimate the cost to fix? Thanks!

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  • Shahid Electronics
    Shahid Electronics May 11, 2010

    It is failure of convergence out ICs and needs to be replaced by qualified TV tech.
    Approx repair cost can be $300


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  • Sony Master
  • 3,459 Answers

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.
Text/images overlap each other in 3 colors, 3D dis - 701cb04.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 yoText/images overlap each other in 3 colors, 3D dis - 2c07611.pngnce chips are bad and should be replaced. This is a common problem.


2c07611.pngSolution


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 email and they will put one together for you. Their kits includes photo instruction guides, original Sanyo STK chips, convergence resistors, pico fuses, etc.

Posted on Feb 10, 2009

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The picture on our Sony TV Model KP-43HT20 recently became distorted, concaving at top and bottom. If I use reset the Flash Focus, the picture will return to full screen side for awhile but the colors do...


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

Jan 15, 2011 | Sony KP-43HT20 43" Rear Projection...

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Distorted picture and color


This kind of problem occurs due to failure of convergence output ICs in Sony KP-51HW40 tv.
Replace convergence output ICs to solve tv problem.
This set uses two of the STK-392-570 IC chips for this (convergence problem)
Local tv repairman will do this job if you have no experience of electronics stuff repair.

Dec 22, 2010 | Sony KP-51HW40 51" Rear Projection...

1 Answer

The picture is wavy with the image looking like 3D when you aren't wearing 3d glasses.


Projection TV sets are known to have two common problems. The first problem that is common to these sets is convergence failure. When this happens the TV will usually look 3D, Wavy/Distorted, etc. It may also shutdown and blink an error code.

The second common problem with Projection TV sets is dull video, halos around objects, white looking video, or red overpowers the screen. This is commonly caused by the fluid in the lens being clouded over.


You can find more details and solutions here on Fixya at the following link below. Or click HERE

3d884ac.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Oct 28, 2010 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Sony KP 51 HW 40 - in left half of screen picture has double images, right half of screen picture is normal.


This problems very common on DLP Tvs.This problems known as a convergence problems,it dead.Colors lines R,G,B mis alignment,have colors shadows or 3D pictures.The tv convergence board is dead.Require to be replaced on the tv convergence board 2 STK convergence ICS and some or all it resistors to solved the tv convergence board problems,to solved tv convergence picture problems.The shop,will cost about $300-350 for parts and labors.

Sep 18, 2010 | Sony KP-51HW40 51" Rear Projection...

1 Answer

The image on my sony kp-51hw40 tv looks 3d. Image ar overlapping each other. Is The tube going out? can it be fixed?


This set uses two of the STK-392-570 IC chips for this (convergence problem) on EBAY about 14 dollars for a pair.

It can be a do it yourself repair depending on your skills.


Getting at them, and being able to solder and remove/replace them is the repair.

Let me know how handy you are, I can provide photos of what they look like and what the board inside the set they are on looks like.

If this told you something you did not know, rate this solution as very helpful as I do this here for free.

SD TECH

Sep 14, 2010 | Sony KP-51HW40 51" Rear Projection...

1 Answer

My Sony KP-51HW40 shows a redish shadow behind the objects in the picture. Is this fixable? thank you ! John


These sets have several common problems listed below.

Problem #1) Convergence

Symptoms:


  • Screen Looks Distorted/3D
  • Colors wont align
  • Screen may look distorted
  • No Audio/Video - makes a chirping sound.
Problem #2 CRT Fluid has clouded over. Symtoms

  • Dull looking screen
  • White looking sceen
  • Halos around objects
  • Red/Orange looking

You can see some examples and find a fix here...

bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Mar 07, 2010 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Picture has red curved horizontal lines


This is a common problem. Its called a convergence failure.

Problem #1) Convergence

Symptoms:

  • Screen Looks 3D
  • Colors wont align
  • Screen may look distorted

You can see some examples and find a fix here...

http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Jan 20, 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

Video inputs


How is this distorted? Does DVD only have Video/Audio jacks or do it have RF output connection and if so have you tried going inset that way? How does it looks with only Dvd Logo on? If Logo is ok then I would look for some other problem.

Sep 11, 2007 | Sony KP-51HW40 51" Rear Projection...

1 Answer

KP-51HW40 - Picture not Clear


Your problem is a typical convergence problem that happens on almost every tube type projection TV set ever built. There are two Convergence amp IC's that need to be replaced. If you have no TV repair experience, play it safe and call in a pro to assist you in this. Good Luck

Apr 29, 2007 | Sony KP-51HW40 51" Rear Projection...

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