Hi @biggles,
Thanks for reaching out.
Can you confirm if your screen was totally black? If so, you can unplug and re-plug the TV. If this does not help, kindly perform a reset on your device by locating and clicking on the reset button.
Let us know if this helps.
Regards,
Janadee
If all else fails, you can try to adjust the Settings > Display type setting when you can't see the screen. After booting up the Roku and getting past the bouncing letters startup display:
A• Press the remote Home button 2 times (Makes sure you're on the home screen at correct position with no screen saver running)
B• Up (Go to Settings)
C• OK or Right (Go into Settings options)
D• Down 3 times (Highlight Display type. It passes through Theme on the way and this may take a few seconds before moving on) so wait 30 seconds or so before continuing.
D• OK (Chooses Display Type option)
F• Up (Moves off current Display Type setting to next one up)
G• OK (Selects this Display Type setting)
At this point, the Roku will try to use the selected Display Type setting. The TV may take a few seconds to adjust to this new setting.
If you see a picture, click the "Yes, looks good" button to lock in this setting.
If you don't see anything, wait about 15 seconds, then hit OK to click the unseen default "No, there's a problem" button to return you to the menu.
H• If you have not found a resolution setting that works, repeat steps F and G to try the next Display option. Repeat until you find one that works.
Staying at a hotel that only has **bleep** hdmi wireless transmitter and no way to plug directly to the tv and I KNEW the issue was it didn't support the resolution that the Roku auto detected since it worked just fine on the 720p boot screen. Your guide to how to reach the display settings when you couldn't see them was a god send. Roku should have a safe mode option to boot in to lowest display settings.