I have a Bravia KE 43x8000d Android TV. Up untill a couple a days ago I was able to cast wirelessly, using a Huawei Router, from my desk top PC ( which is Running Mint Linux 18 and also Win7 ) to The TV using the "Cast"app on the Chrome OS. I'm no longer able to do that as the as the APP is  no longer connecting even though the PC is recconizing the TV's Identifcation discription 0n the network list.. I tried to track down the problem but have had no luck. I thought I could reset The TV to "factory" settings by disconnecting the TV from the Plug for  45 minutes but It did not return to the Factory settings as I thought it would.

Has anyone had this problem before or could help me out with this annoying problem