Cannot Hear Audio From External Device
1) Verify that the Audio is turned up on the External Device while the HARMONY is attached.
2) Verify both the Left and Right Volume control on the Aviation Controller is turned up.
3) Clean the plugs that connect to the headphones and both plugs of the Auxiliary Cable. Be gentle to avoid bending any pins or plugs.
4) Test the headphones separately from the HARMONY to verify that they are functioning properly.
5) Try a different Auxiliary Cord (our Aux Cords are standard four conductor cables found at most electronics retailers).
If you need further assistance, feel free to call us at 719-531-7226.
You can also submit a helpdesk ticket on our website at the link below;