|Apparently V7 R19WPS LCD monitor "Date first available at Amazon.com: December 27, 2005"|
If you've had it that nearly long, it's not surprising you're having problems . LCD displays do not last as long as CRT displays on average.
The most likely thing is the backlight is failing.
The following is about laptop displays but the same thing applies to any LCD display that uses one or more backlights.
Laptop no video (or video problems), and battery, AC adapter, power jack T shooting.
See response 1: