I have a 52" LG LED TV, and a MacBook Pro 15." I have the MonoPrice Mini DisplayPort to HDMI cable, but whenever I connect it to my TV I get the No Signal icon. I've tried setting it to "Just Scan" mode and other options, but it won't work. Actually, the "Just Scan" mode is grayed out, so I can't select it. I've tried 16:9, Set By Program, 4:3, Zoom, Cinema Zoom 1, but none of them work. Is there any way to fix this?