Sony WH-CH520 Kabellose Bluetooth-Kopfhörer — Error codes & fixes
Troubleshooting guide for the Sony WH-CH520 Kabellose Bluetooth-Kopfhörer. Diagnose an error code and find the fix.
Bluetooth not connecting
bluetooth-not-connectingThe device cannot connect over Bluetooth, often due to a pairing issue or interference.
Source: Apple Support — iPhone troubleshooting
Confidence: 80%
Verified Aug 9, 2026
No sound
no-soundThe soundbar powers on but produces no audio, often from a wrong input, a loose HDMI connection or a muted source.
Source: JBL support — speaker troubleshooting
Confidence: 80%
Verified Aug 9, 2026
Not charging
not-chargingThe toothbrush does not charge, often from a dirty charging contact, a worn battery or a faulty base.
Source: Apple Support — iPhone troubleshooting
Confidence: 80%
Verified Aug 9, 2026
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