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Intermittent audio from product | Bose A20 Aviation Headset with Bluetooth
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 issue occurs only with the control module switch in the MUTE / top position.
Set the control module's mode switch to the bottom position for OFF (Intercom Only) mode. If there is no issue in Intercom Only mode, but the issue persists using MUTE (Intercom Prioritized) mode, there could be sound getting into the microphone.
In MUTE mode, any audio received from the intercom always takes priority. For example, if the microphone brushes up against something or is breathed into, that sound comes from the intercom and will take priority causing any non-intercom audio to mute. Adjust the squelch setting or reposition the mic/cable to avoid unwanted noise entering the mic.
In MUTE mode, any audio received from the intercom always takes priority. For example, if the microphone brushes up against something or is breathed into, that sound comes from the intercom and will take priority causing any non-intercom audio to mute. Adjust the squelch setting or reposition the mic/cable to avoid unwanted noise entering the mic.
Check the position of the Multi-function switch.
The Multi-function switch on the control module needs to be in either the top or middle postion. Only intercom audio is heard if the switch is in the bottom position. When the switch is in the top position, intercom audio will override the auxiliary input audio. Move the switch to be sure it is not stuck in between two settings.
Determine if the issue occurs with a connected auxiliary device.
Put the audio selector switch on the headset control module in either the middle or top position. (Be sure it is not in the down / Intercom Only position.) Then, disconnect the headset from the panel and connect an audio device to the 3.5 mm aux input on the headset control module. If you have a headset with Bluetooth®, you can connect a Bluetooth device instead: If the issue still occurs with the aux device, there is an issue with the headset; if the issue is not present with the aux device, the issue is related to the panel settings or connections.
Reset your product.
Much like rebooting a smartphone, your product might need to be reset on occasion to correct minor issues. For more information, see Resetting your product.
Replace the cables used to connect your product
Try replacing the cables that connect your product. If no issue is heard with new cables, the first set of cables is the issue.
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.
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