Samsung UE40D7000LU E-Manual page 304

Issues
The speakers are making an
inappropriate noise.
No Picture, No Video
The TV won't turn on.
◀
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.
•
Make sure the AC power cord is securely plugged in to the wall outlet
and the TV.
•
Make sure the wall outlet is working.
•
Try pressing the
POWER
not the remote. If the TV turns on, refer to "The remote control does not
work" below.
English
button on the TV to make sure the problem is
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