Depends on the model. Some models have energy saving feature
The unique energy saving feature is called 'Automatic Power Down'. This means the television will self-switch into stand-by if no television remote control commands are received within 4 hours. This feature is an energy saving solution for situations where the television may be left unattended for extended periods and has been enabled as the default setting.
You will see an on screen warning prior to the automatic shut down. Automatic shut down will be averted by depressing any key on the television remote control.
Use of automatic power down functions will be progressively introduced to future models in an effort to reduce energy consumption and greenhouse gases.
If you would like to disable this feature you may follow the instructions below (depends on TV Model)
1. Press theMENUkey on the remote control.
2. Press theright arrow keyand highlightSETUP.
3. Press thedown arrow keyand highlightAutomatic Power Down.
4. Press theright arrow keyto change setting toOFF.
5. Press theEXITkey on the remote control.
Some models "auto shutsdown" if it doesn't detect any signal from the TV for around 15mins. Please search for this setting in the user's manual.
I hope it helps!
Programming channels automatically
Your TV can automatically detect all active channels and store them in
its memory. After the TV has stored the channels in its memory automatically,
you can add or erase channels manually.
To add channels automatically:
1. Press MENU, then press "left arrow" or "right arrow" button to display the SETUP menu.
2. Press "Up arrow"or "down arrow" until the TV/CABLE
selection is highlighted.
3. Press "left arrow" or "right arrow" button to highlight either
TV or CABLE, depending on which you use.
If you use an antenna, choose TV.
If you use cable, choose CABLE.
4. Press "down arrow" button until the CH PROGRAM selection is highlighted.
5. Press "left arrow" or "right arrow" button to start channel programming. The TV will automatically
cycle through all the TV or Cable channels (depending on which you
selected), and store all active channels in the channel memory.
While the TV is cycling through the channels, the message
"PROGRAMMING NOW-PLEASE WAIT" appears.
6. When channel programming is complete, the message "COMPLETED"
appears.
7. Press CH UP or DOWN button to view the programmed channels.
OK.
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