Hi all you vapers, my 1st thread on here. Well started vapeing March this year ( no cigs since ). decided to buy a mod and chose the svd. Great mod except for the fire button. After reading about the problem on here I took the said button out to reveal the micro switch. It seemed to be operating ok (clicking on every press). So I gave it a small spray of wd40 and hey not only clicking but also green light put it back together and it is still working ok. Early days yet, only 1 day, but as yet fires every time. Worth a try for anyone with same problem.