disassembly

Hello. I have a RT-AC86U that I recently discovered that the 2nd LAN port is not working. Unfortunaly, my warranty expired 10 days ago so it seens I will have to (eventually) fix it myself. Everything else that I've tested for now has worked. The other LAN ports are okay, as well as the wifi...

Took the lid off my AX88U and it was pretty easy. Thank you ASUS! I have concerns about the durability of the WAN port being too loosely soldered to the motherboard. I think in the end my concern is justified. It looks like they didn't fill the PCB through holes with solder, like they typically...