There may be several reasons why Bubugao tutoring machine H9 suddenly cannot be charged or turned on.
First of all, there may be a fault in the charger or charging cable, resulting in normal charging.
Second, it may be that the battery is old or damaged and cannot store or release electrical energy.
In addition, it is also possible that there is a fault inside the device, such as a damaged circuit board or other hardware problems. It is recommended that you replace the charger and charging cable first, if the problem still exists, you may need to contact the Bubugao after-sales service center for repair or replacement of the battery.
If our Bubugao tutoring machine can not be charged, can not be turned on, it is obviously broken should be sent to the maintenance master as soon as possible for maintenance so that we can better learn.