Question about Sony KP-46WT500 46" Rear Projection HDTV-Ready Television

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Getting red, blue and green halos around images

I removed the red CRT and drained the coolant. It is not contaminated (very clear) yet I'm getting red, blue and green halos around images. I'm beginning to think that it is NOT a coolant problem, unless contaminated coolant in the blue and green CRT could cause the red to be blurred as well. Is this possible, or do I have some other problem? Do I need to pull the red and green CRTs and check their fluids?

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  • merrittga Mar 01, 2010

    I have already replaced the convergence amps and that did not help.

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I had a similar problem with red halos around images on my Hitachi rear projection TV. The problem was that the red convergence chip burned out. I replaced that and that fixed the problem. I found several forum posts on similar symptoms and fixes for Sony rear projection TVs by searching for "Sony rear projection convergence problem." Likely you've already tried the auto-convergence function for your set, if it has that.

Posted on Feb 28, 2010

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Changed crt coolant, better picture. red squiggily line starting at top center of screen, runs about a third of the way down. thought i saw scratch or small crack in green crt "c" lens. would this cau


Sounds like you may have just left one of the wires loose from the red tube. Not likely an issue from the gren tube but you can always cover the top of the lens and let just green shine up. That may help narrow it down also.

Here is more detailed info for you also.....

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.

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TV set after fluid change

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69189a5.pngSOLUTION

What you will need to do is replace the coolant and clean the crt. You can get a repair kit from TvRepairKits.com . It includes replacement coolant,step by step instructions, support, etc.

Jan 17, 2013 | Philips 60P8341 60" Rear Projection...

1 Answer

My mitsubishi vs 6047 has been in unheated storage for about 4 years. now picture is very blury. when words are on screen large letters are legible with small white horizontal lines dancing side to side....


Does the picture look like this?

dcramer531_118.jpg
If so I believe your CRT liquid coolant has gone bad and needs replaced.
How to diagnose bad CRT Coolant:

Note: This problem will only affect the GREEN and BLUE picture tubes. The RED CRT is never affected, because the wavelength of the red light does not promote this algae growth
General Symptoms: Washed out, blurry picture, red portions mostly OK, GREEN images have halos, BLUE portions of images may have halos or be missing entirely.Turn the color level control all of the way down and remove the screen and/or the cabinet that contains the mirror. (different for different models) Do not turn the set off or the color level control will reset to preset levels. Look directly into the picture tube lens while the set is on. First look at the RED CRT. Observe the scan lines in the picture. These same lines should also be present in the green and blue picture tubes.
After looking at the RED CRT for comparison, look into the GREEN or BLUE CRTs. If it is contaminated, it will look like there is a layer of film that you have to look thru to see the picture. There may also be swirls and other various contaminates forming. If it is not as clear and sharp as the RED CRT, it is contaminated, and you should change the coolant fluid. IF you wish to tackle this I will supply more information and instructions. This task is medium to hard for non trained people.
Let me know if you wish to get the instructions on changing the fluid.



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1 Answer

Halo around blue, extremely bad when watching


The CRT coolant in the Blue CRT needs replacement. The green will soon follow. Very common problem with phillips. You can get the phillips CRT coolant kit from www.tvrepairworld.com which contains the coolant and the CD with instructions.

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1 Answer

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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. 

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.



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1 Answer

"Halo" Effect


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. 

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.



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1 Answer

Red and blue faded



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. 

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.

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2 Answers

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Yes you sure can , call electronixs 1-800-223-3205 ask for projection fluid/high purity.

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1 Answer

White objects (especially text) on a black background produce a white halo effect around the white lettering. When playing a PS3 game I noticed that the blue color appeared black, as though I had no blue...





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. 

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.

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fluid comnated in blue crt and maybe in green

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1 Answer

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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. 

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.

May 21, 2008 | Philips 60PP9363 60" Rear Projection...

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