No ideas apart from obvious ones (move away from heat sources, e.g. don't place on top of TV).
I think recent Roku updates are causing processors to work harder on average, leading to heating issues. Making the devices small and cheap also means that heat dissipation may have been skimped or only just enough.
I just received my Roku Express 4K+ yesterday (Monday, December 27). The setup went smoothly, and it's working fine - except that it's running very hot. I have it on my TV stand to the left and in front of the TV. I didn't see any message onscreen about the unit overheating, but when I touched it, it was too hot to pick up! I powered it down before going to bed last night. When I got up this morning, it was still very hot. I immediately unplugged it. I'm now afraid to use it and definitely won't leave it plugged in overnight or when I leave the house. This thing could cause a fire. I am very disappointed with this situation, especially since so many people have had overheating issues. Why hasn't the company corrected this problem?
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