Hi, i have a vape problem i think u guys can help me, i have a vape which brand is Kangertech Topbox Mini, it wont fire when i press the button, always says 0.0Voltage, never changes, i changed the battery but it wont respond, i thought i had a problem with atomizer , i used my atomizer into my friend's vape kit, it worked ,functioning. so there are no problems in battery and atomizer. After that i opened the curcuit there were no cut cables, what can it be? , If u guys try to help me my question i will be gladful, Thanks...