There is a massive thread about this receiver on avsforum.com:
http://www.avsforum.com/avs-vb/showt...26622&page=276
From what I can gather you are not alone in having issues with this receiver. Maybe you should look through the last 10 or so pages, but if you're still within the 2 year manufacturer warranty you may want to see if you can get it repaired/replaced.