Had a monitor that would turn on for 1 minute or so and then just die, turned out to be the power caps
Incidentally, I was told that opening monitors was very dangerous as some retain current for a few hours after being switched off - not sure if its just bollocks or not but best to check beforehand
This is true, especially the old cathode televisions hold currents for hours after being plugged out, dno about the newer monitors though.