Hello, I recently bought a second hand Jetson Xavier NX, and I found that the inductor on the Xavier NX module board is rusted, the location of the rusted inductor is shown below, is this inductor very important? Is it ok to power up the board with that rusted inductor? I already try to power the carrier module with a DC 19V power source, and the LED can turn on automatically, also I measured the 5V and 3.3V are all successfully produced. Since it’s a second hand product, I guess it’s impossible to have a RMA. So should I change it with a new inductor, and where can I find the module board schematic to know the specification of that inductor.
It is a 2.2uH inductor, P/N: HMLQ25201T-2R2MSR.
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Thanks a lot, btw can you tell whats that inductor is used for, if it’s not very important or won’t damage the core chip when I power the board, then I would like to try to flash the image to SD card and boot it before change the inductor.
Update: I already flashed the image to SD card and power the board with 19V DC power source, it can work in serial console mode, but once I plug in the HDMI cable, the board will shutdown automatically. Also the RJ45 connector on the carrier board is not working, the led is not on when I plug in the ethernet cable, and jetson can’t detect the ethernet connection during the system configuration setup. Is this related to the rusted inductor? Or there’s something wrong with the carrier board.
The inductor is for 3V3 which is used for Ethernet PHY.
No wonder the ethernet connection is not working. Are the USB, HDMI also depend on this inductor to produce 3.3V? Cause the USB, HDMI are also not working, when I plug my mouse into the USB port, the led on the mouse is not on, also the carrier board cut off the power as soon as I plug in the HDMI cable. Is this related to the module circuit, or is because the carrier board circuit is malfunctioning. How should I test to know what is wrong.
In theory it only affects Ethernet PHY from hardware viewpoint, but better to add an 2.2uH inductor to there to check if any other failure exist.
Thank you, it helps a lot! I will try to change a new inductor and test if the ethernet is working.
USB provides 5V (for a micro-OTG port or type-A port).
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