The biggest reason for not charging is the charging jack, check whether the jack is inserted backwards, and the plug is not connected to the power supply. Or the reason is the power configurator, some are not original, the output power is relatively low, there will be no charge.
In addition, you can also change a charging head to try to see if the charging head is burned. Charge may also have the above for a long time do not turn there may be reasons, we can check according to the above method to see which step is wrong.
If it still cannot be started or charged, it is best to find a professional to repair or send it back to the manufacturer for repair.