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NEC 1810X LCD monitor - yellow edges?

Discussion in 'Electronic Repair' started by cosmicnetworks, Aug 16, 2005.

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  1. Hi,
    I recently picked up an NEC 1810X monitor. It works great except o
    the right and left 1.5cm there is a yellowish tint. Can anyone help
    What's wrong and how can I fix it?


    Lyl
     
  2. Guest

    First, make sure the CRT glasss is clean and not dirty along both
    sides. (A little humor) Next, you need to degauss the CRT. Normally
    this is done automatically at each cold-start turn-on. But, something
    may have become magnetized that the internal degaussing can't overcome.


    A regular degaussing coil is several hundred turns of 20 to 22 gauge
    wire wound in a 12 - 18 inch diameter coil and connected to 130V AC
    (assuming you are in the USA). You move the coil very slowly all
    around the CRT face, sides and top and bottom and back of the housing.
    Then you move slowly away at least 10 feet from the crt and then unplug
    the power cord of the degaussing coil. The outlet into which the coil
    is plugged should also be ten feet away. Do all this with the monitor
    facing the samme direction it will be facing when in final use as the
    earth's magnetic field can have an effect.

    Noe, if you don't have a degaussing coil. you can try to borrow one
    from someone who does, or you can try the following.

    Use a small soldering gun as a degausser. It is not as powerful, but
    sometimes works in a pinch. The only problem is that the tip gets
    red-hot after a few seconds. So, do your degaussing with the tip of
    the soldering gun placed in the middle of a wet rag to keep it cool.

    Report back the results.

    H. R.(Bob) Hofmann
     
  3. Guest

    First, make sure the CRT glasss is clean and not dirty along both
    sides. (A little humor) Next, you need to degauss the CRT. Normally
    this is done automatically at each cold-start turn-on. But, something
    may have become magnetized that the internal degaussing can't overcome.


    A regular degaussing coil is several hundred turns of 20 to 22 gauge
    wire wound in a 12 - 18 inch diameter coil and connected to 130V AC
    (assuming you are in the USA). You move the coil very slowly all
    around the CRT face, sides and top and bottom and back of the housing.
    Then you move slowly away at least 10 feet from the crt and then unplug
    the power cord of the degaussing coil. The outlet into which the coil
    is plugged should also be ten feet away. Do all this with the monitor
    facing the samme direction it will be facing when in final use as the
    earth's magnetic field can have an effect.

    Now, if you don't have a degaussing coil. you can try to borrow one
    from someone who does, or you can try the following.

    Use a small soldering gun as a degausser. It is not as powerful, but
    sometimes works in a pinch. The only problem is that the tip gets
    red-hot after a few seconds. So, do your degaussing with the tip of
    the soldering gun placed in the middle of a wet rag to keep it cool.

    Report back the results.

    H. R.(Bob) Hofmann
     
  4. Guest

    OOPS!! Just realized the OP said LCD display - Never Mind!!!


    Bob Hofmann
     
  5. This could be the tubes in the back getting tired. You'll need to locate
    replacements.

    Dave
    "cosmicnetworks" <>
    wrote in message
    news:...
     
  6. onlyme

    onlyme Guest

    Hi Lyle, I had the same problem, mine was caused not by the lamps. I
    you take apart your lcd and locate the backlights, you will find
    plastic strips, one on each side, these strips hold the 8 lamps i
    place, on mine due I guess to the heat, my strips had turned a kinda o
    yellow/brown. After carefully removing these strips and giving a reall
    good clean till the were white and then reassemling the lcd, my scree
    is now back to normal.

    Hope this helps yours.

    Paul
     
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