The following is a list of steps you could try if you Smart TV is not responding to your voice searches:

t
1. Check that the microphone is activated and that the audio output settings are enabled on your Smart TV
t
2. If prompted, accept and confirm voice commands permissions on your Smart TV
t
3. Check to make sure your TV is connected to the internet and that it is not blocked from components such as router or firewall
t
4. Try a different microphone or use the same one in a different location
t
5. Perform a reboot of your Smart TV