I am on an H20 and my local channels keep on "buffering". They are clear and smooth for a second and then I lose the audio and then I lose the whole feed for 5 seconds. It comes back on for about another 5 seconds but the same thing happens over and over. None of my cables are loose and I don't know what's wrong. I need help ASAP. I am currently watching NCIS LA and I do not want any interruptions for Person of Interest!