Question about Sony KV-20M10 20" TV

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REAR PROJECTION GREEN SCREEN

My Sony rear projection TV was working fine the the screen went totally green! discontected it totally from powere and Comcast and the picture was back. What caused this and will it probably keep happening. If so anything I can do?

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Dust can cause this, keep your tv clean especially since dust gets into the little vent and can keep the heat from the bulbs from escaping. If that doesn't help let me know how long it takes to get a green screen again.

Posted on Feb 06, 2009

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I have a sony kp-53n77 rear projection tv i cleaned the lenses but i still have alittle to much red how can i clean up the color


Older projection set:

Not knowing exactly what it looks like I suggest two things: first in the menu look for convergence to see if it is off adjustment wise--it can be adjusted in customer mode to see if that helps.

Also either turn color all the way off (Black and white) to see what color the screen is with no color--if somewhat red you will need to turn the red screen control down--I can tell you where and how.

If screen is too red, red will be the prominent background color with color off or on.

Another easy way to LOOK is go to an unused video input---should only see "Input 1" for example in green and rest of screen should be black and not red to any degree.

Let me know with a comment here what you find.

May 02, 2012 | Sony KP-53N77 TV

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Double images purple and green. try to convergence lines are lined up but there is a wiggly green vertical that won't move.


Projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Here are more details and solutions for both. Repair kits with instructions are also avail from www.TvRepairKits.com

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....

  • 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.
  • TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Here are some pics of convergence problems.


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69189a5.pngSOLUTION #1

For more more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Common 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.

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TV set after fluid change

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69189a5.pngSOLUTION

You can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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1 Answer

I have a Sony projection TV KP-53HS10. From one


It is most likely the convergence board. Rear projection TVs use three lights to display the image. The image is aligned via the convergence circuit. After many many hours of use the capacitors and resistors on the board lose their tolerances. It is very expensive to repair if you take into account the price for a new TV and the quality of the image you will be getting if you do have it repaired.

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I have a sony E50 A10 rear projection TV and the blub went out and I replaced it. It was ok at first, but now I am getting blue shadowing along the bottom of the screen and it shadowing also appears in the...


You have a failing optical block. Sony is covering some of their rear projections LCD TV's for such a symptom like this. What is the complete model number and I can check to see if yours is one. The model will be like KDF50....

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1 Answer

I have a hitachi 43FDX10B ultrascand HD rear


well it seems to me that you need to call the manufacturer to see how to reset the pixels for that tv. it seems someone has taking a magnet or something like that to the tv screen

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#1. is the ground witch the connector can be found most likely from the crt tube ground, the one that clip with return spring.

#2. is the flyback screen voltage can be found from flyback transformer most common color is red and be insert to the hole.  

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it sounds like the projection unit went out. if it is still under waranty then i would take back and get it fixed for free. if anything i would contact sony and tell them what is wrong with the tv.

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Is their a speaker or something electronic or electrical near the tv? Move it away, if there is, and see what happens.

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if your set has auto focus try activating it if not you require a convergence alignment.

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2 Answers

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My Dad had a Hitachi rear projection with same problem blue and red were fine green was out of allignment and could not fix. Problem was the acual projector inside TV the cost for repair was more than TV was worth went out bought plasma.

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