Hello, So, about two or three times a week, when I turn on my TV, it will not show a picture I can only hear the sound. I called "DirecTV" and they told me to switch to the dvd player, to see if it would play a dvd. The TV played the dvd fine, and had a great picture, so they seem to think it was the HDMI Cable. They told me to unplug it wait 10 seconds, and when I plugged it back up it worked fine. Last w/end I bought a new cable, and today the TV went black a again and I had to unplug it again. I was wondering if any of you guy's have any ideas, DirecTV doesn't think it's the TV bec