How to Replace the Left and Right Hinge Swivel Assembly on the Sony ULT WEAR (WH-ULT900N) at Home (DIY Repair Guide)
Are the hinges on your Sony WH-ULT900N (model number: YY2981) wireless Bluetooth headphones broken or loose? Do the earcups feel unstable, rotate unevenly, slide out of position, or show cracks around the hinge joint? If you’re experiencing any of these symptoms, the hinge and swivel mechanism may be worn or damaged and due for replacement.