I've been using a Sony KDL32CX520BU with a UWABR100 for around about a year now with no issues. We mostly use Skype and have a camera. Recently however I've been getting an issue where I cannot connect to the network. I am unable to obtain an IP address, I get 169.x.x.x, and a network check shows that both the local network and internet connectivity is unavailable, which makes sense with the standard "I don't know what IP to use" 169 address the TV has selected and the equally invented subnet mask.
I've read all sorts of suggestions, a recurring theme is that the router is incompatible with the TV but having run this configuraiton for a number of months I don't think so, I've also got the firmware upgrade for all network components set to manual so I don't believe any sort of sneaky upgrade has occurred to change its behaviour without my knowing. I also have other network devices connecting to the router without a problem, an they obtain dynamic IPs without issue so I don't think there is anything wrong with DNS.
The network configuration has remained unchanged. The only way to resolve this, seems to be to power off the TV (hard power off) and turn it back on again and then I can get it to work, but this isn't consistent. Not to mention doing this is a real pain in the backside as the socket isn't easily accessable. Sometimes my SSID doesn't appear in the list of options, and interestingly neither do any of the others in the nearby area, which my tablet and my phone can both see so I'm inclined to think this is an issue with the TV.