Contrast is low failure
Time: 2017-02-15 Reads: 810 Edit: Admin
  Fault phenomenon:
  The so-called low contrast is the drop in administrative levels, and color is less bright than before.
  Misunderstanding of the point of failure:
  Effective after a lot of people in adjusting contrast as contrast control circuit fails or tube has been aging, these views are not quite right.
  The cause of the problem and countermeasure:
  In most cases this is due to the screen of the dust is too much, of course, we cannot rule out contrast control circuit part out of the question, but the possibility is very small, and there‘s little method for overhaul of amateurs, so has no effect on screen cleaning after had better look for professional electrical maintenance personnel for maintenance