When in Settings - WiFi Connect: You get a message saying WiFi is turned off. Turn on WiFi. There is no hard switch or setting switch. This means the main board cannot detect the WiFi card, ie it is not turned on. There are videos saying to straighten the cables and remove twist and kinks after unplugging the ribbon. The real fix was unplugging and plugging back in the ribbon ribbon at the WiFi module. The male and female plug do not maintain alignment very well. The twisted or kinked cable causes the male plug to bend. The degree of misalignment will cause various WiFi issues from not being able to connect a PC to the TV (without using Share or a router) to not being able to pic up the home WiFi router at all.
You can try all the power off routines, changing locations, etc. But if you get the WiFi not turned on it is the hard wire connections between the main board and wifi module. Open the back of the TV and work with the WiFi ribbon plugs.
