-  Check the power supply: 
is the socket providing power to the device turned on?
 -  Check the power cord: 
Is the power cord in working condition?
 -  Check the charging port: 
is the charging port free from dirt and debris? Is the port secure and in working condition?
 -  Check the battery: 
is the battery working, has it reached its end of life? Is the battery blocking the power?
 -  Replace: 
If none of the above solves the problem, then replace the device with the same or a similar model.
 
