How to Replace the Hinge Swivel Assembly (Left and Right) on the Bose QuietComfort (QC) Ultra Wireless Bluetooth Headphones (DIY Repair Guide)
Are the hinges on your Bose QuietComfort Ultra headphones broken or loose? If the earcups feel unstable, rotate unevenly, won’t hold their position, or show cracks around the hinge joint, the swivel mechanism may be worn or damaged. If you’re experiencing any of these symptoms, it may be time to replace the swivel hinge.