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Scratched glass on monitor

Discussion in 'Electronic Repair' started by [email protected], Mar 23, 2006.

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  1. Guest

    Are there any solutions to fixing scratches in a monitor? I had to MRA
    my monitor back to NEC for some othe problems but they said they had no
    way to fix scratches in the glass. I was hoping someone out there had a
    fix.
     
  2. Bob

    Bob Guest

    You can buy glass polish at any auto parts store, but it will only
    remove very superficial scratches. Anything deeper and you're
    screwed.
     
  3. Dave D

    Dave D Guest

    That could make things very much worse if, like many modern monitors, it has
    an anti glare/anti reflective coating.

    Dave
     
  4. Bob

    Bob Guest

    True.
     
  5. sofie

    sofie Guest

    teemoh:
    The "short" answer is NO.
     
  6. And if it has an AR coating, it will make a real mess.

    --- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
    Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
    +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
    | Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

    Important: Anything sent to the email address in the message header above is
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  7. Arfa Daily

    Arfa Daily Guest

    But if it hasn't, and you're prepared to work at it, we used to get great
    results back in the 70's using jeweller's rouge. Another thought for a '
    plain ' glass faceplate. How about those windscreen scratch / chip repair
    people that you see set up in supermarket carparks ? They use a glass-clear
    epoxy of some description to fill the defect. Guess it might work for a CRT
    faceplate blemish that wasn't too bad ??

    Arfa

    Arfa
     
  8. Guest

    Not so!

    I've used products sold for repairing scratches on boat/motorcycle
    windshields for glass monitors. It actually fills the scratches, but
    you have to be careful to follow the instructions.
    I've used the same stuff to repair seriously scratched CD's with fairly
    good success.
    Regards
    Lee
     
  9. JANA

    JANA Guest

    The proper answer is NO.

    There are some polishing compounds for glass. There are different ratings in
    these compounds to have the correct ones. They start with the more coarse
    and work to a finer one as the screen is polished.

    The problem with the CRT glass, is that they are usually coated for
    anti-glare. Polishing it will remove the coating from its surface. This is
    going to make the surface look very bad.

    There are some glass scratch filler kits available at some of the major auto
    parts suppliers. These kits are usually used to mask the scratches in the
    windscreens of the cars. I have no idea of how this will work for a TV
    monitor screen.

    Since you have a CRT monitor, I am sure it has at least a few years on it.
    Maybe it would be a good time for you to invest in to a good LCD monitor.
    Once you start with a good quality one, you will never want to go back to a
    CRT.

    Just don't scratch an LCD monitor screen. In this type, the complete screen
    would have to be replaced to fix the problem.


    --

    JANA
    _____


    Are there any solutions to fixing scratches in a monitor? I had to MRA
    my monitor back to NEC for some othe problems but they said they had no
    way to fix scratches in the glass. I was hoping someone out there had a
    fix.
     
  10. Bob

    Bob Guest

    Not usually. Some are, most aren't. No NEC CRT models
    made in the last 5 years have an antiglare coating.
     
  11. crazy frog

    crazy frog Guest

    scraches can be danger, i scached an old
    BW tv years ago and some time in the night
    the tube imploded, glass everyware.
     
  12. Ray L. Volts

    Ray L. Volts Guest

  13. Ray L. Volts

    Ray L. Volts Guest

    Until you want to use your LCD monitor in any resolution other than its
    native mode or you want to achieve the best color reproduction (e.g., for
    WYSIWYG output). I've yet to see any LCD come close to a CRT's clarity at
    multiple resolutions. Pixel-addressed displays lose every time and probably
    always will in this regard.
     
  14. Dave D

    Dave D Guest

    Like a glass cutter, the damage from a scratch can affect glass deeper than
    the visible damage. Slight scratches are OK, but with deep gouges I'd
    discard the monitor after discharging the CRT.

    CRT Monitors are ridiculously cheap these days so it isn't worth it to take
    chances with safety.

    Dave
     
  15. However, note that CRT implosion protection has improved dramatically
    since the early days of time bomb B/W TV tubes.

    --- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
    Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
    +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
    | Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

    Important: Anything sent to the email address in the message header above is
    ignored unless my full name AND either lasers or electronics is included in the
    subject line. Or, you can contact me via the Feedback Form in the FAQs.
     
  16. Dave D

    Dave D Guest

    True, but all things considered, a deep gouge on a crt is not worth either
    the slight increased risk of implosion or trying to correct it IMHO. Also,
    unlike TVs, people tend to sit very close to monitors, and even what could
    be classed as a relatively safe implosion on a TV could be disastrous on a
    monitor. A few years ago a 17" monitor for example would cost hundreds so
    polishing out scratches was sometimes worthwhile, now they're about 65 UKP.

    Dave
     
  17. Mike Berger

    Mike Berger Guest

    I hear this a lot but it's just not true. There are cheap
    CRT monitors of course, but replacing the high quality ones
    some of us use is still fairly expensive.
     
  18. Guest

    Most modern computer monitors have a glued on anti-glare, anti-static
    plastic film layer right on the front of the glass. If the scratch
    went through the filma nd into the glass, replacing the crt is the only
    option. If the scratches are superficial and only in the anti-glare
    plastic layer, then the picture tube can be taken out of the cabinet,
    carefully peel off the antistatic layer and clean any tape residue off
    the glass, and reassemble.

    Two things will happen when fixing it this way: 1. You will have to
    work to keep the dust off the screen every day as dust build up will be
    greater. 2. The image will be brighter and also will be more
    susceptible to room light glare. Gray scale may be off as it was
    adjusted with the light dimming properties of the anti-glare filter in
    place.

    But it will be useable.
     
  19. Mark M

    Mark M Guest

    Maybe on your planet. Not here on Earth.
     
  20. Guest

    Yes, I have had to pull off the plastic film off the face of a large
    number of computer monitors crts in order to make them useable again in
    this way.

    I am not sure what computer crt monitors you use, but every brand I
    have encountered has the antiglare layer right on the front glass.
    Even Sam Goldwasser pointed out that the polish would make a mess of
    this layer in an earlier post.
     
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