TCL Roku TV loses wifi connection and then can't find any wifi networks

NOT EVEN REMOTELY HELPFUL. Seriously I'm about to throw this thing in the trash and beat it with a hammer. I have NINE networks being found on my computer AND OTHER ROKU DEVICES THAT ARE EVEN FARTHER FROM THE ROUTER. I've reset it, I've done the factory reset, I've run an ethernet cord so that I can ensure that my software is up to date. I've even done the thing where you hit the home button 5 times, then fast forward, play, rewind, play, fast forward like it's some kind of video game cheat code, and reset the internet pings (or whatever they were called on that secret internet screen). 

Please try again. This is the most infuriating thing and the warranty JUST ended two months ago. 

Hooked up a roku stick after getting one for free.  Figured it couldn't hurt.  It is working (I think it is bypassing the wifi card issue), though can be annoying at times.  At least it works and didnt have to toss and replace.  I'm sure a chromecast or the like would work too.

My TCL Roku TV upon start up today showed no internet connection and instructed me to set up the internet. When I did so, it repeatedly failed to connect to both 2G and 5G bands. The wireless and internet are both fine -- I have a computer and smartphone within a few feet of the TV and both receive strong signals and 100+ Mbps speeds. After several tries, I contacted the support website. It appears to be a computer-generated series of questions, after which I was referred to a pay site -- $46 a month for tech support ($1 for trial). The warranty on the TV expired about two weeks ago.

I don't believe in paying $500+ a year for tech support on a $600 TV. So I tried another way based on an answer here. I unplugged the TV. When I plugged it back in, it worked normally -- as if nothing had ever happened.

“I have no idea so I’m going to give you some trash answer to get this off of my to do list. Have fun wasting time on some phone call, good bye.”