Here are things you can do to try and get your Smart TV to pick up channels during a channel scan:

1. Check the antenna connection to your television.
2. Check the back of the TV and make sure there are no loose connections.
3. Verify your television antenna is properly connected.
4. Check your antenna’s coaxial connection.
5. Test other channels on your TV to make sure the problem is limited to one channel scan.
6. Check if your TV is set to the correct channel range settings.
7. Rescan for channels on your TV.