Question about Sony Grand WEGA KDF-55XS955 55" Rear Projection HDTV

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42 inch sony vega rear projection LCD , bought 2 years ago, bought dec 06

My Sony vega remote will only turn the tv on(power button works). None of the other remote features (i.e. vega gate, volume, etc..) will work. Also, the TV panel will not work either(vega gate, volume, channel)

When the TV turns on, the screen is full with all verticle color lines, very thin lines, on the screen, like a rainbow of colors in a repeating order.

When the cable box connected, i can see the channel image(movie, show, commercial, etc... faintly through the colored lines.

From the trheads i've seen, i guess there are a lot of sony rear projection tvs with a few problems. Considering that my tv is displayed a picture, lines, colors, etc... are the bulbs fine and am i dealing with a bigger issue

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  • Carl Manaloto
    Carl Manaloto May 11, 2010

    What is the full model number of your unit?





    C-Dog

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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SOURCE: SONY 57' HDTV color projection TV, red color dominance on-screen

these tv's have a problem with bad crt's you could try to replace the red but a better choice would be all three

Posted on Oct 31, 2007

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Ecollier2012
  • 3459 Answers

SOURCE: color distortion and arched picture

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.
701cb04.jpg
77ea520.jpg
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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.

578ba6c.jpg
TV set after fluid change

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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 22, 2009

welcomejee
  • 10594 Answers

SOURCE: Sony HD Projection TV - Picture bent and seeing multiple colors

This is due to failure of convergence out ICs that need to be replaced in D board.
If you are comfortable with TV repair let me know to provide you technical info to fix TV.

Posted on Apr 17, 2009

  • 135 Answers

SOURCE: Sony KP46WT510 picture goes back and fortto horizontal color bars

The pictures show the result of a bad terminal input board. You can verify this by checking the inputs. Connect devices to the board and try different inputs. You will most likely find this problem on the tuner and component input were your DVI and composite video will be ok. If it is the same on all inputs replace the A board

Posted on Jul 09, 2009

Slinteriors
  • 8617 Answers

SOURCE: Sony 51" Rear Projection TV is blurry with colored ghost images

Thats caused by a convergence failure. The Sony type 1 convergence repair kit from www.tvrepairworld.com will usually correct that issue the kit contains the components and the CD with repair instructions so you can repair yourself.

Posted on Dec 21, 2009

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