I have a Roku Premiere and this morning we started getting a overheating message. I have moved the Roku to different locations and I even left it off for a few hours. Within 15 minutes of turning it back on I was getting the overheating message again. I have a fan blowing on the Roku unit and it seems to work as long as the fan is on. The Roku will get very hot to the touch. We installed Apple TV last night and I don't know if that has anything to do with it?
I am having the exact same issue. Mine has always been out front where air circulates well. I can't leave it plugged in because it overheats without even being on. It takes about 15 minutes to overheat once plugged in.
I sent an email to customer support (put down that I had a 4K stick on the customer service page so I could actually send an email). I put down my exact initial post in the email and they are sending us a free replacement.
I was shocked and happy. You might give it a try and see what happens...
I bought my Roku Premiere in February 2021 & it had been working great until last month, when I started getting the overheating message! I can unplug it for a few hours & within minutes of using it, I'll get the overheating message again. My unit has never been in the sun, nor has it ever been inside of a TV unit. It sits on a shelf next to the TV, in the open.
The overheating has gotten so bad that, like you, I've started putting a mini battery operated fan next to it to blow directly on the Roku unit and that does work; however, once the fan dies, the Roku device begins to overheat again. This is ridiculous!
Until now, I was such a fan that I ended up buying 2 other Roku devices (stick+ & express 4k+) & got family members to purchase devices. Now I'm worried about these devices starting a fire in my house & am wondering if it's time to get rid of everything Roku!