Question about Sony KP-46WT510 46" Rear Projection HDTV

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Sony KP-46WT510 46 Some colors appear faded or washed out.

I got this TV from a family member the other day. I like it except for the fact that lighter colored images seem to wash out, or dull the other colors in the picture. It is particularly annoying during hockey games.

I've used the various adjustments in the menu and can't seem to get it under control.

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  • Sony Master
  • 3,459 Answers

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.
Sony KP-46WT510 46 Some colors appear faded or was - 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 Sony KP-46WT510 46 Some colors appear faded or was - 2c07611.pnggence 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 screSony KP-46WT510 46 Some colors appear faded or was - 578ba6c.jpgdull, red/orange, etc. You may even see halos around images.

Sony KP-46WT510 46 Some colors appear faded or was - 65af323.jpga set that needs the fluid changed.

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.

Posted on Feb 12, 2009

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