georgefrompretoria

Q: cinema screen comming up black with blinking light - 3 short blinks

When switching on my Mac Pro, the sceen stays black and the light stays on. When linking thr same screen with my Mac Book Pro the screen also appears black but the light blinks 3 short blinks

Mac Pro, OS X Yosemite (10.10.3), 30" Cinema Display

Posted on Apr 9, 2015 1:13 PM

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Q: cinema screen comming up black with blinking light - 3 short blinks

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