I have had a jetson Nano for months now, that I have previously always powered through the micro USB port. Recently I switched to powering the rails, using a 6A 5V BEC for a drone. I ssh’ed into the Nano using a USB WiFI dongle that we have for Raspberry Pi applications, a MediaTek 802.11 n WLAN device.
I run fairly intensive ROS applications over a local network, with quite some traffic on the WiFi network. On my first nano, after a while I noticed no messages coming through anymore and the USB area feeling hot, so I unplugged it quickly, but since then the board cannot be powered (through any of the 3 options), and only the green power LED lights up. HDMI, serial, USB, Ethernet do not work anymore.
So I ordered another Nano (Rev3) (from CoreElectronics) and a 4A power supply (from Altronics).
After checking my other serial connection and making sure nothing was wrong there (with other devices and multimeter), I went ahead and tried running the experiments again. Suddenly I noticed a drop of messages again and a lack in connection and the USB WiFi dongle seemed to be almost hot to the touch, so I quickly unplugged everything again, to make sure nothing fries. I run the high-power nvpmode 0.
Does anyone have any idea what is going on, why this is suddenly getting hot and dropping out?
Any recommendations would be greatly appreciated, it is a kind of pressing matter due to a deadline coming up.