Recently Roku express 4k + reboots every time I switch over to it, I never had this problem before.
It is plugged into the wall directly and I have it set to not turn off to save power.
Try using a different wall adapter. Swap it out with a USB cell phone charging adapter (5volt, 1amp) and see if issue remains.
Try using a different wall adapter. Swap it out with a USB cell phone charging adapter (5volt, 1amp) and see if issue remains.