Shortly after I got my first Arduino, a Leonardo, I plugged it into what I thought was a 12v dc supply. After the board failed to respond for about a minute I realized something was wrong and disconnected it then got out my multimeter. My power supply labeled 12v was putting out over 19v. :slightly_frowning_face:
I've already replaced the board but I was wondering if it's possible to get the first one working again. Is there any chance the main chip is okay and I just need to replace some transistors or something? How would I tell? If the main chip is damaged what's involved in replacing it? Any advice for a noob is appreciated.