This is just a hope, who knows I am lucky enough to find a tip here which allows me to fix my dead Jetson Nano. It was mostly unused, the day before it was working nicely, I turned it off and then next day it was… well… “dead”.
Does not boot
Does not light on the green light (except when cutting the power)
No video
USB does not turn even the eth lights
The bar pins do the same thing as the connector used in the video.
I made this short video to show how it is behaving:
If anyone have a minute to look and maybe give me a tip regarding which components can be fried, or if reflashing could save it, anything helps.
Please take a photo of how you connect the board. I mean the usb ttl to which pin on Jetson side.
The video seems a little weird. Does the LED on the ethernet port directly becomes on when you power on the board? And the power LED on the board didn’t turn on?
Is your serial UART using a 3.3V level? This with settings speed 115200, 8-bit, no parity, and 1 stop bit. Disable any hardware flow control. If that is correct, then it should work, although you’d want to know this worked in general without the Jetson.
To know if it works in general you can use loopback. For the serial UART board, assuming it is 3.3V (this loopback test won’t tell us if signal level is wrong), that small board with the pins for serial UART could have its TX wired to its own RX. At that point typing in the serial console terminal will echo back what you type. If this works, and if it is 3.3V signal level, then you would be correct to say there is probably failed hardware when nothing shows up on serial console (keep in mind that you could monitor this as you turn on the Jetson, both with and without recovery mode, and pretty much any output would show it is alive…but that single character is not it).
