One thing is I just bought a used one that was bought new but after two months it didnt turn on. Seems like a common occurrence with the versa 3. One thing you can try is: 1) switch the charger box to a different one and different wall outlet. 2) clean the charging contacts with isopropyl alcohol 60% or higher, using a q-tip both the fitbit and charger connections. 3) try a different charger for your fitbit (buy new if you have too) 4) possibly a dead battery if no charge no vibration what's so ever, send it to fitbit for repair (if you still have warranty) or take to repair shops that fix them. And lastly if the repair cost is to much or worth more than the fit bit. Just buy a new one.