You really can't go by just looking at the coils alone. There could be a short like Bebop and Earthling said (more than likely there is a short), and that wouldn't be visible to the naked eye. Since you're new to vaping, I would also advise you to take it back to the store you bought it at and have them troubleshoot it for you. In my opinion, they should've set you up with a simpler tank and coil system, more a plug and play kind of thing to get you started like a Kanger Pro Tank 2 or 3, Aerotank 2, or Anyvape Davide. This one that they sold you is for more advanced users.