Sony STR-DN1080 Manual page 194

[245] Troubleshooting
No sound or only a very low level of sound is heard,
no matter which device is selected.
Check that all connecting cables are inserted to their input/output jacks on the receiver,
speakers and the devices.
Check that the receiver and all devices are turned on.
Check that MASTER VOLUME on the receiver is not set to [VOL MIN].
Press SPEAKERS on the receiver to select a setting other than [SPK OFF].
Check that headphones are not connected to the receiver.
Press to cancel the muting function.
Try pressing the input button on the remote control or turning INPUT SELECTOR on the
receiver to select the input to which you want to listen.
If you want to listen to sound from the TV speaker, set [Audio Out] to [TV + AMP] in the
[HDMI Settings] menu. If you cannot play multi-channel audio source, set to [AMP].
However, the sound will not be output through the TV speaker.
Sound may be interrupted when the sampling frequency, number of channels or audio
format of audio output signals from the playback device is switched.
If you are listening with BLUETOOTH headphones/speakers, check that the [Bluetooth
Mode] is set to [Transmitter] in the [Bluetooth Settings] menu.
If you set the speaker pattern to a setting that does not have center speaker, no sound is
output from the center channel when [DSD Native] is set to [On] and a DSD multi-channel
source is played back.
If you set the speaker pattern to a setting that does not have surround speakers, no sound is
output from the surround channels when [DSD Native] is set to [On] and a DSD multi-
channel source is played back.
If you set the sound field to [2ch Stereo], no sound is output from the center channel and
surround channels when [DSD Native] is set to [On] and a DSD multi-channel source is
played back.
DSD signals from [USB] or [Home Network] cannot be output to the Zone 2 speakers if you
set [DSD Native] to [On] in the [Audio Settings] menu.
[246] Troubleshooting
There is severe humming or noise.
Check that the speakers and device are connected securely.
Make sure that the connecting cables are not near a transformer or motor.
Move your audio device away from the TV.
If the plugs and jacks are dirty, wipe them with a cloth slightly moistened with alcohol.
[247] Troubleshooting
No sound or only a very low level of sound is heard
from specific speakers.
Sound
Sound
Sound