Samsung units are similar. For example you see this happen with WEP protected networks. The common fix is to use WPA2 AES on the router.
I've setup the wireless for the TV. The set found my SSID, accepted by network's password and the set confirms the connection. That's as far as it goes. When I attempt to access my network, I get a "server not accessible" message.
Sony tech support and forum useless and the setup and user manuals are a waste of paper.