Ddj-t1 USB port or ground issue

So the other night I unplugged my ddj-t1 and loaded it in my car to take to a friends house. When I got to my friends, I plugged in the power chord and turned on the ddj-t1. Everything lit up and stayed on as it should. However, when I plugged the USB chord into the ddj-t1 and my computer, all the lights go off. It also no longer shows up on my computer as an audio device. (There is no communication between the ddjt1 and my computer) When I unplug the USB either from the back of the ddj-t1 or my computer or both, all the lights come back on. I have tried over 10 different USB chords and tried another computer. At this point I know something happened inside the ddj-t1. Kinda seems like a ground issue with the USB input. Has anyone experienced this problem of all the lights going off only when the USB is connected?? Thanks!