Achat d'un moniteur ..

A color that that is now suddenly brighter or darker than normal resulting in
incorrect color balance or a tint in the background could be due to a number
of causes:
 
* Bad cable or pin bent on cable connector.
 
* Bad connections or bad component in video amplifier or on CRT neck board for
  that color.
 
* Weak gun in CRT (reduced color).
 
* Bad video card or incorrect software color map settings.
 
* For monitors with sync-on-green capability, the monitor may think you are
  using sync-on-green when in fact you have separate sync.  In particular,
  this may result in a problem with excessive green:
 
  (From: Bob Myers (myers@fc.hp.com)).
 
  Some monitors provide a user-selectable setup option for "sync-on-green"
  vs. separate syncs.  Sometimes, this doesn't really change where the
  sync itself is coming from.  In those cases, it's automatically detected
  but *does* change where the reference level for the video is expected
  to be.  You might try checking this setting, if you have it, and changing
  it back and forth to check the effect.  It's not likely to be the problem
  in a separate-sync system like a PC, but weirder things have happened
  and it's easy and cheap to check out.