First timer, sorry for the long post. Some background - I have a fully functional Jetson Orin Nano Dev Kit running latest Jetpack, super mode enabled, all of that. So I’m not a complete noob, just mostly. I have been having fun with it, and wanted to expand a little bit.
I very recently purchased an “Orin NX 16GB” module on ebay (that’s probably my issue). The quotations will be explained below. It was tagged as open-box but still “new”. Seemed like a good deal compared to most places selling brand new. It came in a generic box with an anti-static bag and the yellow sticker keeping it closed. Seemed fine, and super clean. Didn’t seem used. I had also purchased a Yahboom carrier board, their super board that is supposed to support the NX in super mode at 40w. Also grabbed a waveshare fan, similar if not the same one on the jetson nano kit. I put it all together, and try to boot up just to see the firmware version. The yahboom board lights up when it is on though the LED is red, I think that is just its standard color. I had no signal from the DisplayPort, so I grabbed a Serial USB TTL adapter I had acquired some time ago, but not yet used. No output there either, even after restarting the board (this board has a power button, but I also tried removing and reapplying power). Thinking it could be the adapter, I tried it on the Nano. Worked fine, and both boards use the same pin layout.
Ok then, time for some more troubleshooting. I take apart the Nano kit, and put the Nano module on the yahboom carrier board. Seems to work, I can see serial output despite there being no OS drive on the board. I should also note, the fan works with the nano module on the yahboom board. The fan does not activate with the “NX” module. I switched fans thinking maybe if it wasn’t working due to a heat safety thing preventing boot up. New fan works fine on the Nano dev kit. Great…
Casually looked at the forums today to see what I might find. I saw the pinned post about some NX modules having issues with power over 12v or something, with a link to check the serial number. I had to create an account to use the serial number checker. Looked at various sources and documents for finding the serial number. When I go to find it on the NX, the serial number sticker is missing. Not sure how common that is, I’m trying not to jump straight to a conclusion that the seller is a shyster. They have a no return policy but I might reach out anyway and see if they can provide any background on it. Anyway, I’m hoping someone here can give me pointers and things to try. As for if it’s even an NX, all I can really confirm is that it’s not a nano dev kit module because there is no sd card provision on it. I would love to get it working, my background is very much in software, not hardware so these are uncharted waters for me. If the board is dead, are there people around who could still have use for it? I’m hoping the board is not dead, and I’m just doing something stupid.

