Originally Posted by HofstraJet
I have an M401i-A3 that was unplugged from wifi for a while. When it connected to wifi, it immediately updated firmware to 1.60.10-004.0080 and now the set is totally unresponsive to the remote or the button on the TV. Only way to get in to the menu is to unplug it and then, immediately when plugging back in, turn it on and get into the menu and disconnect wifi by resetting to factory defaults. Set works fine when disconnected from wifi, but as soon as it is connected, it freezes and acts like a monitor, totally unresponsive.
A call to Vizio resulted in them offering to replace the set, which is fine by me as this is a second bedroom set.
Just an update - the replacement set arrived, is on firmware 1.34.44.0080, and has the same issue so it apparently isn't firmware related.
I connected to my network both through wired and wireless connections. Same result. Any idea what this could be? Could there be something on my network causing the TV to lock up? I plan on trying to disconnect my entire network and connect it directly to the modem and see if I get the same result. Very weird.
EDIT: When connected via ethernet directly to the modem, TV works fine, even if I don't disconnect my internal network. FWIW, my wifi router is the DHCP server - the Uverse modem is only used to provide internet access. I manually configured the TV's DNS settings to match the modem and then connected it to the home network - same issue, so not a DNS issue (I don't use the Uverse DNS servers). Any ideas of what on my home network could be causing this behavior? Not too concerned as the TV is going to my mother's house in a few weeks, but I am intellectually curious to know what the issue is. I believe I have a clean network with nothing questionable on it, so this bothers me. Thanks!
EDIT 2: While I generally don't take stock in crappy sites like Fixya, this post
seems to match my issue and states that DLNA servers may be the issue, which would fall in line with my findings since the network the modem is on is distinct from the home network where everything else is (modem provides a 192.168.1.x IP address to my main wifi router and then that wifi router is the DHCP server for the main home network with 192.168.2.x addresses. In addition to all of my DirecTV receivers, I have a Plex server, a receiver, and several BD players that are all DLNA servers. Too much work to shut them all down to isolate the issue, but at least I know what it likely is. Hope this info helps someone else in the future.