Like any other device, regularly restarting your TV will help you avoid minor issues. Restarting can clear up left over data from uninstalled apps, restart crashed applications and clear up memory. Here are three different ways you can restart your Sony Android TV.
For non-Android TV's please follow this link:
https://www.sony.co.uk/electronics/support/televisions-projectors/articles/00023479
To learn how to sync your Google Apps with your Google account:
https://www.sony.co.uk/electronics/support/televisions-projectors/articles/00023479