I had the 7.1 version of this. Started having problems with the sound not working every once in a while. I thought support was great, as they couldn't figure out the problem over a 1 hour call, so they'd "call me back as soon as they set up a system in the lab." They did and had a solution for me! Happened again the next day, tried the solution again, presto! 6 months later, nothing worked, and I'm out of warranty. Lots of people had the same problem, and it seems to have stemmed from substandard microchips on the HDMI card. 2 years old, and dead. Now I'm using my 1986 Pioneer receiver from my other TV. I have been told by sound gurus to avoid new ONKYO receivers, and get Pioneer, Yamaha, or very high end Sony for the money.