I've had my black chrome Provari for a while now...loving it with my 5ml SS cartomator tank, 2.0 dc carto's.....been vaping nonstop at home with it since i've recieved it.... I refilled it yesterday with a TV clove/atomic fireball mix (50/50) and started vaping....had some errands to do so as usual, the provari stays at home...even with my custom holster from Griffin, I leave it because I'm afraid to lose it lol....got home and vaped my brains out until i retired for the night. I got up this morning, made some coffee...picked up the provari and took my first draw of the day....NOTHING....E4 on the LED...I was like, "what the heck?"....pressed again, and it turned to E1.....i lowered the voltage, and again E!.....i repeated it all the way down to 3.3v and still the same next i went to my 'spares' box where i have over 50 brand new and tested good carto's.....every single one attached at 3.3v the LED lit up E1....something happened I'm guessing on the circuit board or chip, so I emailed ProVape for instructions to send it back to have it checked out / poss. repair I'm already lost w/o using it, now relying on my GLV-3 mini and my other mods until it's resolved...of all the mods i own, the provari is my #1 favorite mod