One of these methods always work for me with my oldeest Clip Sport.
WITH A CHARGED BATTERY
Hold down on the Power/Select button and count to 25. Then release the button. If no response repeat the process.
WITH A DEAD BATTERY
Connect the player to a 1.0 amp USB charging source (not a computer). Best results with the original micro USB cable.
Hold down on the Power/Select button and count to 25. Then release the button. If no response repeat the process.
When you see the SanDisk logo. allow to charge for 3 hours.
