Last night my eGo passthorugh suddenly seemed to be stuck on. I immediately detached the atomizer and USB cable, then did a thorough alcohol cleaning. I have since charged it, and it reads 3.7v on the tester. When I put an atty on it and press the button, however, it just blinks 4 times. Then when I unscrew the atty, it immediately blinks rapidly 5 times. I've tried two atties on it, both of which work fine on other units and read correctly for resistance. Has anyone else seen this issue?