15 inch Macbook pro Retina HDMI port will not work

One day it was working fine then all of a sudden the screen when blank and i have not been able to get it to work since.  I use to plug the HDMI cable from my MAC to my TV now there is no acknowledgement on my tv and my MAC will not detect that a cable has been connected like it use to.  Please help.

If available, try connecting to another TV, try another cable and/or another Mac.  An appointment at an Apple store genius bar can determine if the fault lies with the MBP.  There is no software solution in this case.
Ciao.

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