Follow these steps to troubleshoot a frozen Smart TV menu:

1. Check to make sure the TV is connected to a steady power supply.
2. Power the TV off and then back on by pressing the power button on the remote or TV.
3. Unplug the TV from the power outlet for 10 seconds and then plug in again.
4. Check for any pending updates or restart requests.
5. Check the resolution settings, they may be set too high for the device.
6. Uninstall any recently installed applications.
7. If the issue persists, please contact customer support for further assistance.