EarFun Kinder Kopfhörer mit 3,5 mm Kabel, Lautstärkebegrenzung, Blau-grün | 85 dB für kindgerechtes Hören, bequem, klarer Klang, Audio Sharing, faltbar & verstellbar, für Schule & Lernen — Error codes & fixes

Troubleshooting guide for the EarFun Kinder Kopfhörer mit 3,5 mm Kabel, Lautstärkebegrenzung, Blau-grün | 85 dB für kindgerechtes Hören, bequem, klarer Klang, Audio Sharing, faltbar & verstellbar, für Schule & Lernen. Diagnose an error code and find the fix.

No sound

no-sound

The 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
2 fixes available

Not charging

not-charging

The 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
2 fixes available

App not syncing

app-not-syncing

The companion app does not sync with the device, often due to a network or app issue.

Source: Xiaomi support — smart home troubleshooting Confidence: 80% Verified Aug 9, 2026
2 fixes available

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