no-sound Troubleshooting

No sound on the TCL 55C7K QD-Mini LED Fernseher, 55 Zoll, 4K HDR Premium, Dolby Vision IQ & Atmos, Bang & Olufsen Sound, Smart TV mit Google TV, 144Hz, HDMI 2.1, AMD FreeSync Premium Pro, AirPlay 2, Google Assistant

Source: TCL support — TV troubleshooting Confidence: 80% Verified Aug 9, 2026

The soundbar powers on but produces no audio, often from a wrong input, a loose HDMI connection or a muted source.

How to fix No sound

Check the volume

Ensure the TV is not muted and the volume is turned up.

Source: TCL support — TV troubleshooting Confidence: 80% Verified Aug 9, 2026
Difficulty: ★ Est. 2 min

Check the audio output

Ensure the audio output is set to the TV speakers, not an external device.

Source: TCL support — TV troubleshooting Confidence: 80% Verified Aug 9, 2026
Difficulty: ★ Est. 3 min

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