ASA Electronics AVT-1928 - Manual (Page 22)

Protection Features
The following two features protect your TV from operating unnecessarily.
Automatic Blue Screen
If your television is tuned to a channel that is not receiving a signal (or is receiving a very weak
signal), your TV will automatically display a blue screen instead of static.
Automatic Power Off
If your television does not receive a television signal for 15 minutes, it will automatically turn
off.
20- Chapter 5: Additional Features