Here's the problem...I have a Sharp XG-v10wu projector I found cheap. I'm trying to hook it up to my new RCA surround sound/dvd/blue ray player. It only has an hdmi out. So, the projector senses the incoming signal (although 720 is the highest it finds) but wont display the image...what am I missing? I can't imagine a $20k projector being this hard to hook up!