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Stripes on CRT monitor

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phil39 Posted messages 66 Status Member -  
 zabi123 -
Hello everyone,

I bought a CRT IIyama monitor in a lot that has scratches on the screen. This type of monitor has an antistatic treatment.

How can I remove or reduce these scratches?

Thank you for your help

Phil.

3 answers

  1.
    PPBoyington Posted messages 2318 Status Member 402
     
    If there are two horizontal lines at 1/3 and 2/3 of the screen height, it is normal for an IIYAMA; they are support wires, not streaks.
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    1. phil39 Posted messages 66 Status Member
       
      Hello,

      Thank you for the quick response, but no, those are small scratches on the glass or the antireflective coating.

      Thank you

      See you later.
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    2. phil39 Posted messages 66 Status Member > phil39 Posted messages 66 Status Member
       
      Hello everyone, after researching on the forum, I applied the strong method as follows:

      Dismantle the back cover of the monitor, typically 4 or 5 screws.

      Dismantle the cathode ray tube: 4 large screws on the front part of the screen.

      Slide off the plastic cover to reveal the complete screen (be careful, heavy and fragile).

      Gently peel off the aluminum tape on the anti-glare coating of the screen.

      Using a cutter, lift a corner of the anti-glare wire and remove it completely (film 3 to 5/10th of a millimeter thick).

      If any glue residue remains on the screen, remove it with burning alcohol and a clean, soft cloth.

      Reassemble the monitor and adjust the contrast and brightness to 10% lower than the original settings.

      With my monitor, there is no additional static electricity appearing on the screen.

      With this method, I find the screen clearer now than with the anti-glare film.

      Happy repairing.
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    3. PPBoyington Posted messages 2318 Status Member 402 > phil39 Posted messages 66 Status Member
       
      So the screen was really damaged... the problem might come from the sun's reflections since there is no more anti-reflective coating!
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    4. phil39 Posted messages 66 Status Member > PPBoyington Posted messages 2318 Status Member
       
      Hello PPBoyington,

      There isn’t really a gene, and I always orient my screens with their backs to the window (I can see through the window!).

      I find that the anti-reflective film reduces the phenomenon but does not completely eliminate it.

      It’s funny, but the screen without the film has a beautiful gray-green color when it's off.

      Thank you for your help.
      See you!
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    5. PPBoyington Posted messages 2318 Status Member 402 > phil39 Posted messages 66 Status Member
       
      The ideal ergonomics is at a 90° angle to the light source, neither in front nor behind... the key is to be comfortable!
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  2. herval307 Posted messages 13 Status Member
     
    Hello everyone.

    Well, I think I have an answer, but it requires some elbow grease.

    The scratch you perceive is probably not a scratch on the "Glass" itself, but, as you pointed out, a scratch on the antistatic coating.

    So, you need to restore that coating:

    1° Thoroughly clean and degrease the surface of the screen.
    2° Apply an optical resin over the scratches.
    + Look for this kind of product:
    http://www.epotecny.com/fr/resines-pour-applications-optiques-collage-structural-moulage-et-encapsulation-p-3.html
    3° Polish like crazy but without abrasive products. I use newspaper glued to a disk for an electric drill and lubricate with wood shavings. These techniques come from polishing telescope mirrors.

    So I know, it’s long, laborious, and considering the price of flat screens, it’s important to think about it.....
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    1. herval307 Posted messages 13 Status Member
       
      P.S. It also works for flat screens, but here you must absolutely not press.
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  3. zabi123
     
    wa sir, it's difficult but I want to succeed in my TIPE.
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