Not All Sigelei's - Both my #20 are many months old and work fine.
Sigelei 8w is now an Excellent mod.
Yes I have a meter but that will not do me any good if I cant get it apart. I have pretty much figured out its in the Head and possibly the spring that makes the connection. Please if your not going to be helpful I would appreciate you not posting on my thread.
I can't figure what version you have but if you did have a short and burn that firing spring, here is a video on how to fix it:
https://www.youtube.com/watch?v=asYJ2-FEUFQ
I like the 8w too (guess I like top buttons) but its not fully mechanical. There's a wire in the button casing.