Does your player work on other displays? Have you tried to use component cords? Have you updated your firmware?
I read this on CNET :
http://reviews.cnet.com/blu-ray-play...tml?tag=txt;uo
It could be that your TV does not accept the HDMI cord, though I have never heard of this before. Try using component cords and see if they work.
Though I probably don't need to ask, do you have a disc in the machine?