Possible Reasons:
- The battery is too low or completely drained.
- The button was not operated correctly (requires a long press).
- The button is unresponsive or there is a circuit malfunction.
Solutions:
1. Battery Check
Connect the charger to the device and charge it for at least half an hour to ensure the built-in battery has sufficient power.
2. Operation Confirmation
Press and hold the power button for at least 2 seconds to attempt to power on the device, and observe if there is any indicator light or audio prompt.
3. Button Inspection
Press the power button multiple times to check if there is a normal pressing rebound, in order to rule out a stuck button. If the button is suspected to be damaged, please contact to the manual support.