Monitor is flashing off and on

I just started up my computer this morning and my monitor (30"cinema) was flashing off and on. I have my Cinema preference setting to "turn the display on and off". I managed to keep it on long enough to change to "does nothing" so it stays on, but I really need that functionality for rendering overnight and not leaving the display on.
I checked the button and nothing is blocking it. Could it really just burn out if I never actually use it more than maybe 10 times? Is there anything I can do to troubleshoot this?
thanks,
Dave

<http://support.apple.com/kb/ht2811>
Sometimes just unplugging the display from power and the computer for a few minutes will fix things.

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Monitor is flashing off and on

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