The reasons why the Bluetooth headset has power but cannot be turned on are as follows:
1, if it is the first time to use, can not open the machine, perhaps the boot method is wrong. Try pressing the power button and the volume button at the same time;
2. Some Bluetooth headphones are fully charged and the light will be off. If it can be opened before it can't be opened now it should be broken;
3. It may also be that the Bluetooth headset battery or the switch key is damaged and can not be turned on;
4. The earphone is not used for a long time (more than one month), the inside of the earphone battery has entered the tide, rusted, the battery is useless, so it can not open the machine.