Don't cry. Here's my shoulder to lean on.
Probable cause:
I've not tried t2, but maybe when you unscrewed the tip, you also unscrewed the head slightly. I don't have a t2, so I don't know whether the heads are screwed on or non removable. But it happened to me when I used ce5 clearos before.
If you don't want to have to dump your
juice out to check,
1) unscrew the tip,
2) jam a tooth pick into the centre post,
3) try to turn the toothpick clockwise
4) fire the device,listen for the
juice sizzling
5) if it doesn't fire, repeat step 3 to 4.
If all fails, dump the
juice, unscrew everything and ensure head is tightened.
Not very probable:
If you have a device that can check the resistance of the clearo, check the resistance. Maybe the centre post is not making contact with the battery.