Question about Sony KP-57HW40 57" Rear Projection Television

2 Answers

Double image My problems are as follows: the picture is some what clear,but lettering have a shadowing and also people of yellow, green and red... any suggestions

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  • vknott Feb 24, 2009

    The red , blue and green are out of place with a bow ty like pattern, the focus is viewable. I have tried adjusting the lenses with no resolve, this only disturbes the focas. you can bring the red,blue and green back inline with each other but the focus is way out.



    any sugestions?

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  • Sony Master
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Your TV most likely has one of two 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.
double image - 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 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.


TV set after fluid changdouble image - 65af323.jpg/>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.

Posted on Feb 28, 2009

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  • Contributor
  • 42 Answers

Change the convergence Ic's
Stk 392-560

also replace the micro fuse 5 amp
on the power supply

Ohm out all of the micro fuses on the power supply just for gp's

Posted on Feb 13, 2009

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