Hardware :: Any Ways To Extend The Life Of Monitor/repair?

For a while now my eMac monitor has been flickering and my screen geometry has been fluctuating (it comes out about a half inch on each side, then snaps back to regular size). I just came back from getting something to eat and my screen was black; power light was on and the computer was humming but totally black screen. I clicked and moved the mouse and hit some keys, but no response (power saver settings are turned off). I did a hard reset using the power button and the screen remained black for several seconds before it finally came back.

This computer is pretty old, I've had it for 6 or 7 years now. I think the monitor is finally going out. I definitely don't have enough for a new computer, so I want to squeeze as much use out of this one as I can. Are there any ways I can extend the life of this monitor and/or repair it? If not, what's the cheapest way to work-around a dead monitor? Is it even possible to attach an external display to an eMac?