Wifi not connected

[barefootdesciple]

Hi all, 

I have a KD-49XD8099, bought in late 2016. I upgraded my standard broadband connection to a fibre connection a few days ago. All of my devices connected to the new router without any issues except for this TV. I’m getting a “wifi not connected” message every few seconds. I’ve connected via ethernet and it works intermittently. 
I have done a factory reset and reset the router as well. I have also checked the time and date settings. I have a second Sony TV and it is working perfectly. 

Any help or suggestions would be greatly appreciated! 

Thanks! 

[khallergard]

Do you need both WiFi and ethernet?   Try pulling the ethernet plug.  Or try disabeling WiFi (Network/Advanced/Built In WiFi)

[barefootdesciple]

Hi, thanks for your reply! 
I don’t need both, I was alternating between them to see if anything improved but no luck! 

[khallergard]

Did you use static IP addresses on your previous router which maybe do not work on the new router (192.168.0.x versus 192.168.1.x)?  But how could it work intermittantly?  Beats me.