I have an HDTV and bought a tablet specifically so I could watch content on my tv from the tablet. However it doesn't seem to work. I connect the cord, I set the output to 720p, the TV supports 720P, but when I go to the right screen which for me is HDMI1 nothing shows up. Now the tablet goes blank and the TV stays blank for a while but eventually says no signal. any help? I have the apad 710 and am wondering it it has to do with HDCP?