No tv display with thunderbolt to hdmi, no tv display with thunderbolt to hdmi

I just bought a Thunderbolt to HDMI connection cable.  It is an apple cable. My Tv just stares back at me in Blue. Does anyone know why the cable is not working or knows how to resolve this. It would be greatly appreciated.  Thanks.

Hey DanVanB, 
Thank you for visiting Apple Support Communities. 
You may find the troubleshooting tips in the "Update your software and firmware" and "No video or no signal, image distortion, 'snow,' or flickering" sections of this article helpful, if you've connected your MacBook Pro to an HDTV but only get sound:
Apple computers: Troubleshooting issues with video on internal or external displays - Apple Support
Sincerely,
Jeremy 

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