MP72-HB0 OB_LAN_TEMP sensor -> 105C!

Ok, this board has been nothing but troubles for me so far. After one RMA already, which resulted in a new or repaired board from the manufacturer, after about a year of operation it again started playing tricks on me. This time the OB_LAN_TEMP sensor measures 105C which disables the dual 10G NIC on the board and it is inaccessible from the network. BMC works fine though and I can access the console from there, the system appears to be working “fine” from the console.

It’s populated with dual Q80-30 CPUs and 512GB of RAM. I have to say, my Asrock ALTRA board has been rock solid, but I’ve regretted buying the Gigabyte one.

It’s out of warranty but I’ve requested an RMA anyway, just in case.
If anyone has any suggestions on how to fix this, I’d appreciate it. I’ve tried putting larger fans to increase airflow, everything else remains super cool, but this chip keeps getting hotter and hotter, just at a slower rate. The problem is that it sits right in the middle of the PCI-e slots so I can’t just put a huge heatsink or I essentially disable the PCI-e slots.

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ok, turns out that a small component decided to “take a walk” around the board. It was placed close to the NIC chip, but have to take the board apart to figure out where exactly.
This might explain the overheating, but I have no idea if there is any permanent damage done. I have some equipement here to try to resolder it, but it will take a while.

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That’s annoying. I cannot find a match for 65N on the motherboard BOM. is there anything on the underside to help identify?