My one year old ACD 24 display connected to MACPRO 2008 w/ GT 120 is not showing any image. And when I try to manually detect display it is not detected. Nor does it show up system profiler under graphics. All 3 usb ports work and isight and speakers to. These usb devises are all recognized in the system profiler as apple cinema devices. ' But screen remains Black ??? Unfortunately I just ran out off warranty, and with my limited trust I Danish authorized repair shop, I´m afraid off being charged the same repair price, as the cost of a new display, regardless of its being a blown fuse or broken panel. Have read similar descriptions of the Problem but no answers so far. Any ideas??