Roku Express. Worked fine last night. Today, black screen. I've tried all the troubleshooting, unplug, wait, plus back in, etc. I get the jumping "Roku" start screen then just goes black. Extremely annoying!
This may indicate the Roku is trying to send in a resolution the tv does not support.
I'd suggest trying the Roku on a different TV if one is available, especially if it has a working Roku. If it comes up okay there, go into Settings > Display type and change the Roku to the actual resolution of the problem set instead of the "auto" setting. When you get to the countdown screen click on the "yes" option to lock in the setting. Now move the Roku back to the first set and see if it works.
Let us know how you make out.
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