What list of things would you suggest that I do to troubleshoot my Smart TV connection?

1. Check that your TV and HDMI connection are both secure and connected properly.
2. Check the volume level on both the TV and the device you are connecting from, like a laptop or Blu-Ray player.
3. Change the TV to a different resolution, then switch it back.
4. Update both the TV and the device you are connecting from.
5. Check that the settings are set up properly.
6. Consider restarting the TV.