Previous information posted on the TX-NR708 thread:
Bought the unit: January 2011
Problem with unit not recognizing the remote commands: April 22.
Problem with unit changing inputs and powering itself on and off: May 5.
July 27,
I had given my unit to the Fry's repair department and it was returned saying the problem was the remote was incorrectly set to 'Zone 2'. Being the remote was reset to factory settings a couple of times without resolving the problem, that obviously wasn't the resolution, so I had it returned to the repair department. I have since found the thread that showed the press release from Onkyo about the problem.
http://onkyousa.com/press_releases.cfm?id=215
I notified Fry's. They said the repair people should know about that. Being they didn't the first time, I have my doubts they will the second time. They send their repairs out to a 3rd party. The next time I will take a copy of the press release with me!