Samsung PN51D490A1DXZA E-Manual page 223

Issues
The speakers are making an
inappropriate noise.
No Picture, No Video
The TV turns off automatically.
◀
Solutions and Explanations
•
Check the cable connections. Make sure a video cable is not connected
to an audio input.
•
For antenna or Cable connections, check the signal strength. Low signal
level may cause sound distortion.
•
Perform the Sound Test
•
Ensure the Sleep Timer
•
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, and the signal is coming from an antenna or
cable connection, the TV will turn off after 10 - 15 minutes if there is no
signal.
English
as explained above.
is set to Off in the System menu.
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