My Teensy 3.5 board stopped working. Computer doesn't detect it, when I power it there's 0V on GND pins, and 3.3V on 3.3V pins, but all other pins are at approx. 0.12V according to my multimeter (I don't have a scope). The strangest thing is that it was working before I put it on the shelf, it was lying there untouched for approx. a month and now it's not working. I checked USB cables and tested everything on 2 different computers just to make sure, got the same result. Do anyone has any idea what could have happened?