This monitor comes up with fine vertical lines in color, I have two monitors conected to the computer and the other displays proplerly, if I change page on the good monitor the dell can be seen to change the line colour. I have tryed different cables etc, I have used the Dells colour test and this displays the full screen red, green, blue, white, although it does seem a bit slow to do so. I have replaced the main larger caps on the board with no sucess. I have been unable to find a schematic for this lcd monitor.