I killed my tetra.

[sqerk]

I was playing with my pineapple this morning, was going to move it to a shelf and outlet across the room. I tried to keep it running. It was plugged  in with its oem adapter, I used a powered usb cable to bridge the gap, unplugged the ac adapter, plugged it back in across the room, unplugged the usb power. Then nothing, dead... I've done the same before accidently, moving a laptop around and realize the cord had come unplugged, that's why I was so brave about being so careless today. I opened it up thinking maybe I'd see a burnt spot or something, then I could at least attempt a repair. But it looks fine.

Does anyone have any advice? Is there a particular component that it might be? Or is the thing junk

Thanks