Weirdest thing I've seen in a very long time. 
Running 5V directly to the Nano 5V pin is something you should try. You'll have to find 5V somewhere for that. If your UNO is burned, I guess not that.
Weirdest thing I've seen in a very long time. Running 5V directly to the Nano 5V pin is something you should try. You'll have to find 5V somewhere for that. If your UNO is burned, I guess not that.