What is it doing, or not doing, Cricco?
1.
batteries charged ?? ( use a voltmeter if you have one , they should read 4.2 volts each )
2. Take off the atty /carto first
3. Do you have a RED LED light ?
4. DO you have a Blue Led light when the button is pushed.
5. DO you have a Blue led with the ATTY/CARTO ON the unit ?
6. Do you have BOTH red and Blue led lights ?
7. Do you get a blue led with the atty/carto ON but no vapor ?