Samsung Series 4 4000 User Manual page 202

Issues
The TV turns off
automatically.
◀
Solutions and Explanations
●
Ensure the
Sleep Timer
menu.
●
If your PC is connected to the TV, check your PC power
settings.
●
Make sure the AC power cord is plugged in securely to
the wall outlet and the TV.
●
When you are watching TV programs from an antenna,
the TV will turn off after 10 - 15 minutes if there is no
signal.
English
is set to in the
Off System
▶