To fix a frozen or unresponsive screen on your Smart TV’s home screen, here are some steps to follow:

1. Press and hold the power button on the TV itself for a few seconds.
2. Disconnect the power cable from the electrical outlet for 5-10 minutes.
3. Reconnect the power cable back to the electrical outlet and turn the TV power on.
4. Check if the issue is resolved.

If these steps above did not resolve the issue, then contact your Smart TV manufacturer to see what support they can provide.