Good afternoon,
I have an arduino uno r3 and I have oversuplied the 5v pin with 15v or so by mistake, because the voltage source was badly calibrated, and it did shutdown my computer three times in a row, while connected to the arduino, until I realized something was badly wrong.
The ON led still glows everytime I connect it with my computer eventhough I can't upload any sketch on it and moreso I've tried some tests I've seen throughout the forums, like the Blink sketch with and without the ATMEGA328P-PU and both failed to load, and still, the device is identified in the Windows USB port eventhough I was using it in a Mac when it went wrong.
Tried also to load the serial sketch but neither the TX or RX LED blinked.
In this case, could I repair it by replacing the ATMEGA or is it possible that the board is totaly useless?
Thank you for your help.