equipment damage, poor contact of USB flash drive, and whether the switch is turned on.

1. Check whether the Hansheng mobile audio equipment is damaged, and the music cannot be released after the damage.

2. See if the usb interface of the USB stick plugged into the Hansheng mobile audio is loose or has poor contact, which will also lead to music failure.

3. Check whether the switch of the stereo has been turned on, which is the key to playing music.