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QC 35ii right side speaker not wrking.

QC 35ii right side speaker not wrking.
Hi

ANSWERS:

Muhammad Adrees  possibly a bead crossover wire and a bad driver (speaker) and cold solder joints. Those are relatively new headphones. Contact the seller you bought them from or contact Bose itself. This should be a warranty repair.
This description follows on from the partial ifixit tear down and is to replace a dead right earphone driver. I opened the compartment containing the right QC35 speaker/driver by cutting the outside panel with a dremel- a small circular saw used for models. After turning off the unit with the adjacent switch, I removed the ribbon cable. The cut was parallel to the plane of the earphone at the sides and perpendicular at the top and bottom. The cut at the top was through the Bose logo, to avoid damage to the microphone, switch and the driver wires. At the bottom edge, the cut went above the small acoustic port on the right, next to the USB circuit board.
Hi @woutver

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