How to recover Arduino Nano from death

Using Arduino Installation & Troubleshooting
#1

Hi, I am using an an arduino board V3 in a system and I killed some of them .

-One was because one wire connected to 5V touched GND or some other, while arduino was connected to USB.
-Another was testing a board that had an shortcut from 5V to GND, and also was supplying 6V to some analog inputs.

Both arduinos doesnt respond anymore, either external supply neither USB supply. I think this arduino board have protections and so, and seem difficult to me to kill so easily an arduino, just with 5V supply. So, there is some recovery that I could try to recover them? Or some part of the board I should check/repair)

Thanks in advance

#2

I am afraid not. The arduino does have a voltage protector but it is only wired up to the wall power connector and the AREF pin. grounding the 5v pin is one sure fire way to kill your boards

#3

OK. Thank you very much for answering so soon

#4

A 5V to gnd short on the Nano often fries a Schottkey diode (I think that it's D1) that connects +5V and Vusb. If that's all that's failed, you can replace that SMD diode with another one or with a carefully connected thru-hole diode.
Ciao,
Lenny

#5