Sony HT-A3000 Help Manual page 112

Help Guide
Sound Bar
HT-A3000
No sound or only a very low-level sound of the device connected to the speaker
system is heard.
Press (volume) + on the remote control and check the volume level.
Press (muting) or
Make sure the input source is selected correctly. You should try other input sources by pressing the input select
button on the remote control (TV/USB/BLUETOOTH).
Make sure that the connectors are firmly inserted.
(volume) + on the remote control to cancel the muting function.
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