Sample troubleshooting steps for a blank or frozen screen on a Smart TV:

1. Disconnect all power sources including batteries for remotes.
2. Wait for 10 seconds.
3. Press and hold the power button on the TV for 15 to 30 seconds.
4. Reconnect the power sources.
5. Attempt to turn on the TV.
6. Test a different input source if available.
7. Check if the TV is up to date on firmware updates.
8. If the problem persists, contact customer service for more assistance.