I was working a few weeks back on my Jetson Nano, using the micro USB port for power supply. The adapter for the power supply had 5V, 2A specifications and so Jetson Nano worked without any issue. I took a break for around 2 weeks where I did not operate my board at all and came back to see that suddenly the same power supply is not able to power up my board.
I checked the usual suspects. Firstly, there is no jumper present on the J48 pin. Next, I tried replacing my power adapter with a different one with the same capacity, but to no avail, which means the issue is not in the adapter itself. If the power supply is not enough for Nano, even then it should at least power up and show the green light on the board right? Also, nothing has changed in the last 2 weeks and so the same power supply should work right?
I am currently ordering a jumper and a 5V, 4A barrel power supply in order to see if the alternate power supply option can work. Mainly, I want to understand what could have gone wrong to cause this? Is it possible that somehow the micro USB power circuit got broken, but it has not affected the board itself and there is some hope if I switch to a different form of power supply, or it must be some internal error in the board itself and changing the power supply is not really going to matter? Also, since the board is not even powering up, what exactly can I do to further investigate this?