I accidentally powered my Jetson Nano with 12V. It seems like I might have damaged my carrier board. Is this repairable, or do I need to replace the carrier board now? Can I use any carrier board, or do I have to use the same model (p340)?
You can refer to P3449 schematic in DLC to check the damaged carrier board to find out the root cause, or use another same carrier board. Also you can check with the vendors in Jetson Ecosystem for 3rd-party carrier board of nano.