Re: Roku Express 4K+ suddenly says no input detected & won't function.
To clarify a bit -- it is the TV that says it is not detecting any input on the HDMI port which you've set the TV to display.
First thing to check: This may seem pretty basic but it does trip people up -- Make sure you TV is set to display the same HDMI port to which you've connected the Roku.
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. If this post solves your problem please help others find this answer by clicking "Accept as Solution.".
Streaming Stick 4K+ 3821 | Streaming Stick+ 3810 | TCL Roku TV 43S245/C107X