Monitor's screen has a yellow tint

Hi, there

 

For the past two weeks I've experienced the on-again, off-again

yellow tint to the monitor's screen.  However, now into the

third day, the screen has remained yellow.  Needless to say, It's

h*ll on the eyes too.

 

Here's what I have...

a circa 8/2000 Dimension L667r with an E770 monitor. Will give

you other specs if needed to analyse/diagnose.