Half of my display is goin on and off

Hi,
i just got a used cinema display 24'' it works with a mac mini. but as i started my mac mini half of the display is grey or takes the colour of the background.
It flickers and get on and off... but only the right-half of the display.
Any Ideas???
Thnx Gabor

Hi aramjc777,
Thanks for visiting Apple Support Communities.
I recommend starting with the steps in this troubleshooting guide if your display is turning off intermittently:
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573
All the best,
Jeremy

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