Cinema display has sound, but no picture.
My 27" Cinema display went black. As in COMPLETELY black. No picture whatsoever. Iv done all the minor troubleshooting, and tried a new thunderbolt cable. Still have great sound, but no video. The display shows up in "displays" in Sys Prefs, so I'm a little stumped. Any suggestions?
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Try shining a flashlight directly at the display and see if you can detect any picture.