I have a TiVo HD that's been running into a Samsung LCD, via HDMI, for nearly 2 years, without a problem. A couple days ago, I got an error saying HDMI Not Available (HDCP problem). I've tried unplugging the cable, and rebooting both the display and the TiVo, with no success. Now my set does not recognize that anything is even connected through HDMI. Other inputs work okay. Is there some common problem to cause this to happen? Do HDMI ports or cables just go out sometimes?