Hello EcalVin
Thanks for reaching out here in the Community.
You've mentioned that you are powering your device from the TV's USB port. In some cases, the USB power provided by the TV is not sufficient to power the device. Even though your Roku device may appear to be working, running with insufficient power can lead to instability, crashing, and other unpredictable behavior.
Using the included power cord and power adapter, we suggest plugging your Roku into a working power outlet in the wall. Powering it through a power outlet in the wall has the additional advantage that your Roku player will not need to power up every time you turn on your TV.
Let us know if there's any difference after.
All the best,
Kariza
Ok…switched off the power time out setting on the Express box and changed power feed to house power, not TV. Turned off TV at end of day. When starting up TV this morning the Roku device was in screen saver mode. So, I’ll declare PROBLEM SOLVED. Thanks for your help, everyone.
I can add that the standard Express is rather outdated and has very limited memory which can cause all sorts of problems. The Express 4K should be considered the minimum Roku to buy, especially with your large screen.
