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27" Cinema Display Black Screen, Magsafe works, USB does not

So my 27" Cinema Display is just black. I have seen people saying they had this problem and a new PSU fixed it...however, in my case, the magsafe connector works fine and it charges my laptop...Also, my laptop recognizes the monitor and I can change settings (resolution, etc...) for the monitor. the USB does NOT work. Does this sound like the symptoms of the PSU? Sounds more logic board related to me.

Posted on Nov 20, 2013 2:24 PM

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27" Cinema Display Black Screen, Magsafe works, USB does not

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