Just bought this bad boy yesterday, along with a Kennedy RDA, and some twist .36 ohm coils. I built the RDA (just one coil for now) and stuck it on my normal mod (a Jaybo RX200s) and it fired straight away @ 3.7v (around 50w) perfectly without problems. I got really nice vapor production and flavor. I put the RDA on the Fury-S, a charged battery, stick the 7a magnet in, and cap back on. Press fire button, I hear a very faint sizzle for half a second, a tiny bit amount of vapor flows up, but then it stops "firing". Okay. Try another battery? Nope. Same thing. Hmm. Google a few things. Try cleaning the contacts, I check for signs of overheating, nothing. Last thing I can do is try the magnet without the fuse in it but I am scared it may blow up? Am I doing something wrong or should I try it without the fuse magnet?