#3 How do I scan for TV channels if there are new ones available?
Your TV settings menu will have an option for CHANNEL, in this menu there is an AUTO CHANNEL SCAN option. Make sure your TV is connected to an outdoor antenna that supports digital receptions then select AUTO SCAN to a begin a scan for channels available.
Some Hisense TV’s will have a mains power switch located under the front screen, ensure that this is switched on after plugging the TV into a working power outlet.