Step-by-step

1. 1

   Power off the headphone

   2 min

   Shut down the Sennheiser Momentum 3 and disconnect chargers. Set up a clean, well-lit workspace before opening anything.

2. 2

   Remove exterior fasteners

   4 min

   Remove the screws or clips securing the outer housing. Keep fasteners organized by position.

3. 3

   Open the housing

   8 min

   Use heat and plastic tools where adhesive is present. Separate panels carefully to avoid cracking clips.

4. 4

   Disconnect power

   3 min

   Unplug the battery or main power connector as soon as it is reachable.

5. 5

   Expose the repair area

   8 min

   Remove shields, brackets, and cables blocking the fault area. Inspect for corrosion, debris, or loose connections.

6. 6

   Complete the cable repair

   12 min

   Clean contacts, reseat cables, or replace the damaged modular part as required for this cable repair on the Sennheiser Momentum 3.

7. 7

   Test before closing

   5 min

   Reconnect power temporarily and verify the repaired function before finishing reassembly.

8. 8

   Reassemble and secure

   8 min

   Reverse the opening steps, reconnect all cables, replace screws, and close the housing flush.

9. 9

   Final verification

   4 min

   Power on and confirm the repair plus related basics (touch, sound, charging, cameras) still work.