worst thing I've done to a piece of hardware.......
can't remember any except that when I was a kid, my parents bought us a "Family entertainment system" kind of the pirate version of a NES (I also had a NES).
I wanted to play but I couldn't find the AC cord, so I plugged in another one that was laying around in my room, as soon as I did the thing started so smoke, It became useles after that