Over in the CNET Networking forum at http://forums.cnet.com/networking-and-wireless-forum/?tag=contentMain;contentBody we have 2 posts I'd check.
1. The Samsung thread.
2. The Welcome thread.
Both cover a lot of the usual things that trip up these devices.
Anyone having issues connecting the AVR 1713 to the internet via Airport extreme? I 've tried everything and nothing is working? It just wont allow the connection. I've tested the modem and cable and they are not the problem. Denon support has no ideas other than to return the unit.