@maize1blue
The USB power port on your TV may be the culprit. Try plugging the Roku device into the wall outlet instead. If your device did not come with a power adapter, try using a cell phone USB charging adapter (5volt, 1amp).
Roku Community Streaming Expert
Just another Roku user... I am not a Roku employee.
Insignia RokuTV, Ultra 4660, Premiere+ 3921, Express 4k+ 3941, Streambar 9102