My Sennheiser CX 400BT Left Earbud Stopped Working and I Need Repair Guidance

I purchased a Sennheiser CX 400BT True Wireless headset from MediaMarkt on 25.09.2022, and now the left earbud has completely stopped producing sound. Although I’ve taken good care of the device, it’s now out of warranty and the extended protection plan has also expired. Despite the product being o...




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