There is a thread of others having that problem. You're going to get this response. Someone who followed that type of instruction replied with this. They received no further assistance. (Collusion tactics: nobody's responsible.).
You could try:
home>settings>system>power>restart. Especially if "fast-start" is enabled in that menu. Sometimes memory gets corrupted/stale, and never reloads fresh (even if you power off/on).
Or, the so-called "cache clear:"
Hit HOME 5 times. UP once. REWIND twice. FAST FORWARD twice. (Clears cache & tv reboots itself. Be patient. It takes 2-3 minutes for the tv to go black, and come back on)
That does something other than restart. Nobody (including Roku) seems to know what it does. (All Roku has said is "there is no cache, [eye roll; silly customers].").
If that didn't work, I'd be looking at system>advanced>factory reset. But, during the initial setup tell it you'll connect to internet later. This uses less problematic software. Maybe the tv could be usable this way as a "dumb tv." Buy an inexpensive firestick, stream through HDMI. (Bonus: you'll protect your tv from Roku's untested updates which break tvs.). If the problem goes away without network, you can go to settings>network to create a connection & see if the problem returns (but, you'll be exposed to updates.).
"People are often amazed at how much we’ve done with the number of engineers we’ve got." (Roku CEO Anthony Wood, Austin Statesman, Oct 4, 2019). "Amazed" is one way of putting it.
I’m using Roku premier since 11/2019 just today it started overheating. I have unplugged and restarted it 4 times over the course of the day. I’ve also cleared the cache that does not exist (wink wink). The unit is in an open air area but continues to overheat after about 8 min. Need some direction here other than trash the thing.
My Roku is over heating and I have done all the things suggested, When I wait for hours and plug it back up. it. it starts getting hot. i moved it far away from any heat or the tv. What do you suggest? Or should I go buy another device?
If you are still experiencing an issue, please send me a private message with your Roku account email address and include the serial number of the Roku device from Settings>System>About along with a summary of the issue you are experiencing. I'll be able to assist you further from there.