Question about Samsung HCL4715W 47" Rear Projection Television

1 Answer

Green color comes on and off

When TV is on, the green color sometimes isnt being projected or very lightly as there is a heavy red tint. stuff that is supposed to be normally green is very dull or gray colored. Occasionally i will see a light green flash cover the whole screen and the picture will be normal again. It is intermittent and goes from normal to green not working frequently. Lots of light green flashing. Had the convergence board replaced last year. When green is out, perfect focus does not work and unable to do any green convergence from the menu. Please help! Thanks!

Posted by mcmasterson on

  • mcmasterson Aug 10, 2007

    I have tested it with my DVD player hooked up and when using that it displays the same problem. Also when i watch cable through direct tv, i see the problem. I havent got to the back yet to test the connections. I was in the back a week or so prior hooking up a Wii i just bought. I had to pull out the TV only slightly to do this.

    Not sure if the movement or loose cables could be doing this?

  • mcmasterson Aug 12, 2007

    I was looking at the back of the TV yesterday and noticed that when the green is apparently gone, i am unable to see the green being projected at all from the back. I can see the blue and the red projectors throwing off color, but the green projector is dead. I am not sure the technical name for the part. IT looks round as is between the blue and red.

    I also have come to notice that if the TV is off for a while then the green works fine for a couple hours. AFter it has been on for awhile is when the green starts flickering on and off.

    I have tried hitting the side and moving it around and it does seem to have no affect on having the green come back on.

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Anonymous

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I need some answers here... Do you have only one video source to test it? Is this happening with an external source or with your tv tuner or both? I need more info....

Posted on Aug 10, 2007

  • Anonymous Aug 12, 2007

    If sometimes, if you move or hit the tv the green colour flashes, it means that the colour card of your tv is loose. Maybe if you open up the tv and check if all the cards are firmly attached to the tv (something like the pci cards on the motherboard on pc). Also check the cables which are connected to the projection system of your tv.

    BE AWARE OF THE VOLTAGE THAT THE TV MAY KEEP EVEN IF YOU HAVE UNPLUGED IT. IT HOLDS HIGH VOLTAGE INSIDE THE CAPACITORS.

    Just try with a plastick stick or something. If i was near i could easily fix this for you but now i can only offer you advice.

    It's best for you to take the tv to a local tv service rather than trying something extreme with this voltage all around.

    Health and security is first of all.
    If you have a little experience with electronics go ahead and try my solution.

    Thanks for your time.

    I hope your problem will get solved ;)

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*Backlight: 16
*Contrast: 83
*Brightness: 53
Sharpness: 50
*Color: 55
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Expert Control
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  • Noise Reduction: Medium
  • Gamma: Medium
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  • Real Cinema: On
  • TruMotion: Low
  • Color Standard: HD (N/A w/HDMI)
  • White Balance: Warm
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      • **Green: 2
      • **Blue: -16
    • 20 IRE
      • **Red: -6
      • **Green: 0
      • **Blue: -7
    • 30 IRE
      • **Red: -5
      • **Green: 0
      • **Blue: -4
    • 40 IRE
      • **Red: -8
      • **Green: 0
      • **Blue: -4
    • 50 IRE
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      • **Blue: -4
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      • **Blue: -5
    • 70 IRE
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