So, for some reason, one of my brand new micro gpens just stopped working. I put some shatter on top of the heating coil, took a few hits (two of the hits felt especially hard and felt like something went through the mouthpiece, but nothing actually went through the mouthpiece) and it just stopped working. The lights are turning on and everything, but the coil will not turn on or heat up. Any ideas on why this happened and how I can fix it? Or how I can prevent this from happening again? This is probably the second gpen that I've had this happen to. Am I gonna have to buy another heating coil?