Mac 21.5 won't sleep, comes back on.

I click sleep on the apple menu, the screen goes black, then about 10 seconds later it wakes up again.  The display stays on, and doesn't go to sleep automatically either.

"I am a great distance from an Apple repair shop and am reluctant to take it in and be told that they don't know what the problem is."
See if your computer qualifies for the iMac G5 Repair Extension Program for Video and Power Issues
**WARNING: DUE TO SECURITY REASONS, PLEASE DO NOT POST YOUR COMPUTER'S SERIAL NUMBER ON THESE MESSAGE BOARDS.**
======================
You may also wish to check the following link(s) for one in your neighborhood.
AASP
AASP's Outside of the USA
Good luck!

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