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No audio from the aux device

Try the following steps to resolve your issue:

Make sure your connected device is on and playing

on the speaker, press aux and make sure the source indicator is illuminated

AUX

Make sure the 3.5 mm plug is fully inserted into the speaker, and fully inserted into the source device

make sure the speaker is not muted and the volume is up. press the play/pause button to mute/unmute the speaker

Play/pause

Increase the volume level on the aux device

Increase the speaker volume

Try using a different Aux cable