Well, not "dead" but screwed up. The display shows the battery is full (and I had recently charged it) but it will not fire. I thought the coil was screwed up, so I replaced it, but the display still read 1.11 Ohms (and it was a 2.4-Ohm coil, verified with my VOM). I took the tank off and fired the mod again and the display still says 1.11 Ohms with no coil. I tried different tanks and the display still reads the same regardless. (9.0W. 3.16V, 1.11 Ohms) which calculates perfectly using Ohm's Law (that is, P=E^2/R), so something between the 510 connector and the board (or on the board) is stuck/fried/whatever and the electricity is not being delivered to the coil. If you have any brilliant suggestions, I am open to them. The reason I haven't fiddled with the internals yet is that I have sufficient other mods to not "feel" the loss at this point, so I'll play with it later.I noticed that you believe the board is dead in your VT. How can you be certain without taking it apart?