Toshiba 32C120U "no video signal" from my Mac Mini using HDMI to HDMI.

My Toshiba 32" 32C120U is not getting video signal from my Mac Mini. I bought the Mini for my son and this is his TV. I have hooked up the Mini to my older 22" Toshiba and my 56" Samsung with the same HDMI cable and it works great on both. What the heck is wrong with my son's 32" Toshiba? I did update the firmware on the TV and the Mac Mini has been completely updated as well.
I have also tried both HDMI 1 and HDMI 2 ports with his Xbox with success, so both ports work. I have also tried both ports with the Mac Mini and there is "no video signal" on both ports. I noticed that when I hooked up the Mini to the other TVs it automatically selects the best video setting, so there is obviously some communication that happens between the Mini and TV, but that is not happening with my son's TV.
Any suggestions would be greatly appreciated.
Thanks in advance,
John

I solved my issue . . . returned the Toshiba for an Insignia . . works great.

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