1, check whether the charging socket is in poor contact. If yes, clean the socket with a cotton swab and gently clamp the USB socket with pliers.

2. If the charging cable is plugged in and the charging light is on, it is impossible to charge, that is, there is something wrong with the stereo and it needs to be sent for maintenance and inspection.

3. If the plug-in lamp doesn't work, there may be something wrong with the charger. You can try different chargers.