I was in my bedroom when I lost audio only on TV2. The Video was fine. After troubleshooting, I came to the conclusion that it was the 622 not outputting the audio. I came up front and went to single mode then PIP and swapped pictures. No audio just like on back TV in dual mode. I rebooted my 622 by holding power button in for 10 seconds. When it came back up Audio returned back to TV2. Anyone else experienced this?