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Hobbs Flyer How to Repair a Bose X (A10) control module down cable

How to Repair a Bose X (A10) control module down cable - Part 2

This is part 2 of our series covering the installation of the Bose X control module down cable. In this article, I will focus on the end of the cable that connects to the control module. If you need instructions on installing the end of the cable that connects to the microphone, see our January 2024 blog. As a refresher, the control module down cable is the headset mic cable that runs from the headset microphone to the audio control module. 

Replacing the down cable on a Bose X is a relatively easy process that can be accomplished within 10-15 minutes. All you need is a standard screwdriver and a replacement down cable. 

We can also perform this installation for you. To get started with our headset repair service, click HERE.

Step 1: Detach the old down cable

As mentioned in the previous blog post, the first step is to remove the cable assembly from the headset. See our detailed guide posted in our January 2023 blog here.

Step 2: Remove retainer ring

To begin the process remove the retainer ring, and remove the battery cover. 

Hobbs Flyer fixing Bose A10 Aviation Headset
With the battery cover removed, use an X-Acto knife to carefully trim away the piece of the label covering the two screws. This will give you better access to the screws that hold both halves of the housing together. Next, remove the two screws that hold the top and bottom pieces of the control module housing together.
Hobbs Flyer Bose X control module screw removal

Step 3: Remove the old down cable

Carefully lift up the control module cover. While doing so, make certain to not remove it entirely, or break the battery lead wires that are connected to the circuit board. Using your X-Acto knife carefully cut away any hardened hot glue that you see on the white 7-wire connector so that you can disconnect the old down cable wire harness from the circuit board.

Hobbs Flyer Bose X A10 Down Cable Removal

Step: 4 Install the new down cable

Insert the white wire connector into the receptacle found on the circuit board (the two small locking tabs should be facing the back of the receptacle). Ensure that the red battery lead wire is twisted around the 7-wire harness. Next, insert and position the strain relief into the control module housing as shown. Make sure to position the wires so that the cover can be installed without crimping any of the wires. You will need to fold the wires.

Hobbs Flyer Install Bose X A10 Aviation Headset Cable

Step 5: Install the cover

Finally, reposition the cover and hold it in place with one hand while you reinstall the 2 screws with the other. Reinstall the retainer ring on the housing and the battery cover. 

Congratulations! That's it, you're done. Install batteries and test everything then go fly. 

Sean Huggins

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