I have a TCL roku tv that's about a year old. For a few months now it seems to forget about my wifi on starting almost every single time I turn it on.
It says "Connecting..." in the top right corner, but it never connects. If I go into settings and tell it to set up my wifi connection, it finds and connects to my wifi immediately. But then the next time I turn the TV on, I have to go through that procedure again.