I had to watch the superbowl in standard Def! For the past few days my HD channels will randomly drop all sound except for the bass during certain commercials. Once the commercial is over all sound returns to normal. During the pregame show the HD channel had delays (pausing) and pixilization, switched to other HD channels and they appeared to work just fine. It got so bad I finally had to switch to standard def and everything worked as well as standard def works.
I use optical/HDMI cables from STB to Yamaha receiver to Vizio TV. Anyone have any ideas how to address this issue?