I'm in watt mode, build is 0,35. Analyzer show 0,350, with some minimum oscillation (0,351/0,349). Tried also a different atomizers with different builds, all of this work fine on my other dna devices. As I said, now my vtbox is working fine, because I connected to pc and unconnected, tomorrow, after inactivity, it will show again the shorted message after some consecutive puff. And I forget to say that if I insist to press fire, the mod will shut down, with some difficulty to turn on; in this state, if I connect to the charger and press fire, it will show "warranty service" message (tried chargers from 0,5a to 1,5a)
edit: I have to add that during the night I have the mod in charge with these chargers, not sure if they can cause this problem