There is no sound in the computer zebra class.

1. First of all, the audio output line (the line connecting the speaker) is broken, which is in the form of a connector.

Secondly, press the mute button of the radio.

3. Then take the stereo apart or take it down from the auto repair shop, and follow the back line to find out if the connector has fallen off.

4. Finally, press the radio mute button or volume button again to confirm.