Samsung UN46ES7500F E-Manual page 470

disconnecting, and then reconnecting
device's power cable.
The speakers are making an inappropriate noise.
Check cable connections. Make sure a video
cable is not connected to an audio input.
For antenna or cable connections, check the
signal information. A low signal level may
cause sound distortion.
Perform the Sound Test feature. (Support
→
Self Diagnosis Sound Test)
→