Would just like to say, my screen on my DNA200 did the exact same thing. It's SUPER dim and it lights up when I fire but only when I fire. So I went searching and found this thread. I have an old Hotcig DNA200 and it's the only mod I have left that's still functional. I've been using it for years and thought it was done. Well thanks to this thread, I tore it apart, and found the same problem with the fire button screwing up the ribbon cable, which makes sense now. The only reason it works when it fires is that cable is making contact when the button slams into it. 10lbs in a 5lb box syndrome. Thanks for keeping this thread around, it saved my DNA. Now I just need a screen.