🚀 go-pugleaf

In article <ah.726429974@dolphin.doc.ic.ac.uk>, ah@doc.ic.ac.uk (Angelo Haritsis) writes:
> A speaker magnet created a large blue (on white background) spot on my SVGA
> colour monitor. How can I bring it back to normal - can I de-magnetise it
> somehow ?
> Thanks.
> -- 
> Angelo Haritsis, Applied Systems Section
> s-mail: Dpt of Computing,Imperial College, 180 Queen's Gate, London SW7 2BZ, UK
> e-mail: ah@doc.ic.ac.uk - tel:+44 71 589 5111 (x7511) - fax:+44 71 581 8024

  In front of your screen, right behind the glass, there is a fine metal
  mesh used for producing the right colors on your screen. As you know,
  there are three electron-guns in your CRT, each producing one of the
  colors red, green and blue. Now you have held a magnet in front of your
  screen, the mesh has been disformed, and the electrons that come from
  the various guns are directed incorrectly. This causes the screen to turn
  in a particular color (in your case blue).

  To put it short: Your CRT is fucked up really badly!!! And because you are
  not able to open the tube to straighten the mesh again, it will be difficult
  to get things ok again. You can try the following:

  1 -- Get a good demagnetizer, the same that is used for demagnetizing
       cassette decks.

  2 -- Use a magnet and wave this in front of your CRT. It is important
       to create a random magnetic field, so you have to move the magnet 
       up and down randomly. Start nearby and slowly walk back, constantly 
       waving the magnet (it sounds like voodoo magic, but it is the same 
       way you have to use a cassette deck demagentizer).

  BUT: THINK TWICE BEFORE YOU START DEMAGNETIZING YOUR CRT WITH A BIG
       MAGNET, YOU COULD MAKE THINGS WORSE!!! PLEASE DON'T B/FLAME ME
       IF YOUR MULTI-THOUSAND MONITOR IS RUINED FOR LIFE AFTER DEMAGNETIZING.
         
  (ps: way back, i used to go to our local tv-set store, with a huge magnet 
       in my pocket. after a while some tv's showed funny purple and blue
       spots all over the screen. i'm lucky they never caught me :-) )
      
       ---< Sonic says: "more haste is more speed" >---