1. Check your wireless router’s settings to make sure your settings are correct.
2. Check your Smart TV’s wireless network settings and make sure they match your router’s settings.
3. Check and make sure the wireless network name broadcast setting on your router is enabled.
4. Update your router’s firmware.
5. Try to move your Smart TV and router closer together and/or adjust the placement of walls or furniture blocking the signal.
6. Try connecting your Smart TV to a different wireless channel.