I've left it at home and when I came back, every time I press fire, the screen turns on but as soon as I let go of firing, it immediately turns off. If I hold the fire button, it turns on and gets to the mode screens and is sort of operational (except for the fact that you're holding fire).. Usb can't detect it but no voltages on battery and or charge on screen. Could this be a battery problem? or is my DNA broken in some way? https://www.youtube.com/watch?v=gQGSPi5mNAY Exactly the same as this!