WIZMO did and did not work.
I did the "wizmo monoff" and it turned the screen off! Not a black, but OFF! I was thrilled. My mouse must have moved, because the screen came back on, so I did it again - careful not to move the mouse, and it stayed off! Woo-hoo!
Then I came "out" of the off mode (moved the mouse/typed the keyboard) and then problems started happening. My screen would turn ON then OFF in a set pattern (1/2 second on, 1/2 second off) and NOT STOP!!!!
I had to press the power button (which I have set to SHUTDOWN) to fix the problem.
Now, I use a lot of customized Desktop things (like Object Desktop, WindowBlinds, DesktopX, etc.) so that MAY have been the cause. I will experiment further, time permitting.
I would like to see someone else give Wizmo a try, as I am a big fan of Steve's work, but didn't even think to use Wizmo (thanks for the refresher, C_P).