i got a joytech 510 a week ago it been workin pretty good so far but last night i charged it and forgot it chargin all night, i dont think that matters right?? but i took it 2 eork today and was using it and no vapor came out. i got a new filled cart on it also, like i puffed on it and nothin happened besides it started to get hot. i tasted it tho but no vapor....is it broken or any idea?