Wireless earbuds that only play sound on one side are usually affected by connection errors, uneven battery levels, or physical blockage such as dirt or earwax. Common fixes include resetting and re-pairing the earbuds with the device, fully charging both units, cleaning the speaker mesh, and checking audio balance settings on the connected device. In some cases, updating firmware or forgetting and reconnecting the Bluetooth device resolves syncing issues between the left and right earbuds. If the problem persists, it may indicate hardware failure in one unit, requiring replacement or professional repair.

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