@andimae-
If you are powering your Roku by plugging into the USB port on the TV, try powering from house power via the USB power adapter that came with the Roku*.
The ports on many televisions only supply 0.5 amp or less, which is not enough to power a Roku reliably. It may appear to start up okay, but when it runs into something that requires more power than the tv's USB port can provide, something's got to give. Frequently this results in shutting down the stream you are viewing and exiting back to the Roku home screen. Or it may cause your Roku to overheat.
If this is a new problem, possibly an update to either the Roku operating software or to some channel app software is using a little more power than in the past. If you were just barely scraping by before, this might push you over the edge.
*If your Roku didn't come with a USB adapter, or if you don't have a Roku adapter handy, any other USB power adapter you have from another device should work as long as the fine print on it says it outputs at least 1 amp.
Roku Community Streaming Expert
I am not a Roku employee, only a user like you. Please, no support questions via private message -- post them publicly to the Community where others may benefit as well.
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Ultra 4800 | Streaming Stick 4K+ 3821 | TCL Roku TV 43S245/C107X
