@terziyski Hi, thank you for your reply. I did a hard reset many times. I am using two other same old models for the last 5 years. Now, I need to wash its motherboard or circuit and see the result.

Hi, I have a tp-link tl-wr740n router. I have a problem. The LAN 3 port of this router is still ON without an ethernet cable. When I connect LAN 3 port with my pc, it gives an error IP address. On...