The Headphone is broken. Noise in the headphones when the volume knob is turned. One or more stations have buttons that do not click when pressed. One or more stations have no clicks and will not play music. Four stations have no clicks and will not play music.
Music plays only in one ear.
Our Technical Support representatives are available to assist you with all of your technical needs. The volume knob turns all the way around. Unplug the station wires and the headphone wire, making sure to unscrew the wing nut that holds the plastic strain relief clip and put them aside. Plug the station wires and the headphone wire into the replacement control station. Mount the control station using the four screws and appropriate driver.