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Humming, buzzing or rattling noise heard from product | Bose Aviation Headset X
If you hear an unexpected noise from your product:
Try the following:
Determine if any recent changes have been made to the headset or aircraft.
If any changes or modifications have been made to either the headset or the aircraft, look into whether or not those changes could have unexpectedly caused this issue.
Check if the noise is affected by the volume control on the aircraft panel volume control.
Without adjusting your headset volume, turn up or down the volume control on the aircraft panel. If the noise level changes as well, the noise is related to the signal being received from the panel.
If the aircraft panel has a squelch control, check if the noise is present when squelch is turned down.
If the aircraft communication system has a squelch adjustment, set it to the lowest setting. (Tip: Some systems might have automatic and manual squelch modes. You’ll need to switch to manual mode to try this.) If the issue is resolved by lowering the squelch adjustment, the issue is related to the sound being picked up by the microphone or to the aircraft panel noise floor.
Determine if the issue occurs when your headset is powered off.
Your headset works in passive mode (powered off with no noise cancellation). If the issue still occurs while the headset is powered off, the issue is related to signal coming being received by the headset from the aircraft panel (i.e. the connections, wiring, or interference).
Determine if the tone of the noise changes when the avionics panel is touched.
If the tone changes when the avionics panel or any other area of the plane is touched, there may be a grounding issue with the aircraft or the intercom connections and associated wiring.
Plug in a different headset.
If available, connect a different headset to the aircraft to determine if the issue is related to the aircraft panel or its settings.
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.
Check the integrity of the 6-pin panel connection.
If there are any broken pins inside the connection, replace the installation kit.
Try connecting a different audio device.
If available, connect another audio device using the same cables and connections to determine if the issue is related to the first device or its settings.
Contact an NRT technician for troubleshooting assistance.
The nature of this issue with the Aviation Headset X requires the assistance of an NRT repair technician. Contact the NRTG Repair Shop at extension 54455, Monday through Friday, 8:30AM to 5PM ET
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