My MVP stopped working today (only had it a month)
but I have managed to fix it
I thought this might be useful for others so here goes
The problem:
MVP shows 'non' without a tank but a short 'R0.0' with tank on.
Previously working tanks stop working.
If a pencil (or other non metallic item) is used to press lightly on the center pin the MVP shows R0.0 (a short). This indicates that the pin is shorting when being pressed down (like when you attach a tank).
The solution
I managed to pull the pin up enough such that it cleared the top of the threads, I then put a rubber grommet behind the lip (over the pin) and pressed it back in. This has now stopped the pin shorting when pressed and the unit is now working again.
Note that when puling the pin up do it gently as there are wires on the other end (so I'm told), if you pull too hard/far you could pull the wire off.
Nb. I hold no responsibility if you kill your device trying this fix
I believe that one of two things happened to mine, either the insulator broke up and disintegrated (what is the effect of ejuice on these non metal parts?) or the previous insulator fell out and I didn't notice.
Hope this helps someone else out.
You may get it to work by very lightly screwing the tank on but this will eventually stop working as well (mine did)