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No audio and noise cancellation in one earcup | Bose A30 Aviation Headset
Check the volume setting on the intercom/radio.
Adjust the volume knob on the intercom and/or radio and listen for a change in the volume level.
Re-insert the headset cable to the aircraft panel.
- Disconnect the down cable where it attaches to the panel
- Inspect the connections for damage or debris and remove any debris that is found. If there is damage to any the connections, they may need to be replaced
- Firmly reconnect the down cable to the panel
Determine if the 6-pin-to-G/A adapter is being used.
If using the 6-pin-to-G/A adapter cable, check the condition of the cable and its connectors. If the adapter is damaged, replace it.
In the control module on the cable, check the position of Intercom Mono-Stereo switch.
Try the Intercom switch in the ST and the MONO position and determine if audio returns in both ears.
Connect the headset to a different panel jack or, if possible, to another aircraft.
Non-TSO equipment, worn jacks/loose connections, or incorrectly wired jacks (i.e. reversed stereo or mic / ground wires) in the aircraft can cause issues. If available, try connecting the headset to another jack in the aircraft or to jacks in a separate aircraft. If the headset works fine when connected elsewhere, the panel jack or wiring to the jack is the issue.
Clean the headset cable connectors with isopropyl alcohol.
The connectors at the end of the headset cable might have debris or corrosion on them. Apply a small amount of isopropyl alcohol to a cloth, wipe the metal connectors, then dry them with a clean cloth. Once cleaned and dried, connect the headset and try again.
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