Do your Sony ULT Wear 900N (WH-ULT900N) headphones experience inconsistent charging or wired playback? Do you have to wiggle the charging or AUX cables to get a stable connection or hold them at a certain angle? If you experience any of these issues, the AUX and charger PCB may be due for replacement.
Do your Sony WH-ULT900N wireless Bluetooth headphones have a dead or failing battery? Are the touch controls unresponsive or only working intermittently? Does the charging port only work when the cable is held at a specific angle? Are the earpads or headband cracked, torn, peeling, or worn out? If you're experiencing any of these issues, this DIY teardown guide will show you how to disassemble your Sony WH-ULT900N headphones and complete the necessary repairs at home.
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.
