It’s best to follow a few key steps to troubleshoot an internet disconnection on a Smart TV.

1. Check all cables and connections, including any power cables and adaptors.
2. Restart the Wi-Fi modem.
3. Restart the Smart TV.
4. Verify that the Wi-Fi network is broadcasting and the Smart TV is connected to the same network.
5. Ensure that the router firewall is not blocking the Smart TV.
6. Check if the internet service provider is experiencing technical issues.