WAN ports on a router connect to external networks.
WAN ports on a router connect to external networks.
Hello, everyone. I've been trying to explain my issue here. It seems like several routers (10+) have stopped working, often due to the WAN port getting damaged. This happens repeatedly over time. Thanks to the shop service, I always replace my router with a new one. The problem is that the router functions normally until the WAN port turns off unexpectedly. That's all I've noticed so far—only for the port where the WAN cable was connected. It helps that ASUS routers let you switch LAN to WAN settings, which works until the LAN port gets damaged. This keeps happening one after another. How can I fix this? I spoke to an internet provider technician who said WAN connections don't rely on electricity at all. Why are these ports burning up one by one? Please help!
Have you checked if the connections are corroded? It might be that the actual chip fails because it has to resend packets repeatedly.
You can retrieve logs from the router to inspect the chip without breaking the warranty. Since it’s only been a week, you should be able to access the data safely.
You should have asked him to review it, since if your routers keep having their WAN ports damaged, it shows there’s definitely an issue with the cables—something is feeding extra voltage and must be addressed. Ports don’t just fail without cause.
This situation depends on what caused the issue. We don’t know if it’s a chip, a port, a fuse, or a cap—many failure points are possible. Excess voltage on low-voltage wires is one potential cause that should be identified by the ISP technician. The modem would need to supply that power. What type of ISP connection do you have? Cable, DSL, fixed wireless, fiber, etc.?
Direct connection between two flat surfaces without intermediary cables