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Can't get secondary display on my iMac

266 Views 4 Replies Latest reply: Jan 29, 2013 8:25 AM by Rudegar RSS
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Jan 19, 2013 12:56 AM

Hi All,


Looking for help as this has got me stumped and Apple technical didn't offer much help over the telephone.


I am trying to connect external display to my iMac 21.5-inch, Mid 2011 2.7GHz Intel Core i5 using MDP (male) to HDMI (male) cable without any luck, I just get the no signal message even upon trying a few different monitors/TVs.


Can't be a faulty cable as I also have a MacBook Pro 13", Early 2011 2.3 GHz Intel Core i5 which works fine with external displays using this same cable and any of the monitors I have tried.


Both iMac and MacBook are running Mountain Lion 10.8.2


Apple offered very little help over the telephone just advising me to take this to a repair centre not the most convenient thing as this is about an hour away!


Any help would be greatly appreciated.



iMac, OS X Mountain Lion (10.8.2)


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