Remove the silicone ear piece. You will see to arrows pointing inwards. Gently open the buds at this point. Don't pull the apart, there is the thin cable holding the 2 sides together. Be careful. Once opened, you can check to make sure the cable is attached correctly. My right ear piece had no bass and volume was very low to non existant at times. After doing this, and pressing on the port to make a secure connection inside, they work perfectly. I was very nervous doing this myself. but it worked.
