First, I should say I am truly a newbie when it comes to this subject. I recently purchased an Onkyo S760 HTiB which I am using with a DirecTV Philips DSX5500 receiver and Sony Grand Wega Projection LCD. I should also note that the Philips receiver was an "open box" purchase. The receiver is connected via optical digital to the receiver. Initially, I was getting surround sound, when available, through the satellite channels. Now, I am not. I am still getting surround sound via CD and DVD player. I have gone through the owners manual about 20 times. I've cleared the receiver settings and reset everything several times with the same results. The only two things that have happened between now and the time surround was working have been a fuse being turned off to the outlet supplying the system and my wife messing with the remotes. Is it possible that this "open box" receiver is bad? Any suggestions would be appreciated.