Why my Mac Mini cannot connect to my Samsung 32" HD LCD TV?

Hi guys, I just bought a mac mini and a Samsung 32" HD LCD TV. I was trying to connect the mac mini to the TV by HDMI cable,I and set the PC as the source of the TV. but the TV cannot find signal at all. I tried both HDMI ports on the TV, the results were same. Please help me about this problem. Thanks a lot.

Welcome to the Apple Discussions!
Please tell us about your LCD TV. What model is it? What year was it made?
The reason that I ask is because Samsung says that their TVs made before 2007 have a DVI/HDMI port that does not support computer connections.
Samsung's Guide; How To Attach Your LCD TV To A Laptop Computer

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