Model : Hardware Version : Firmware Version : ISP : Hi my TL was working well, in some point it stop work WAN1, I try change wire, acces point, reset all and nothing help

Model : Hardware Version : Firmware Version : ISP : Hi i got this TL-R480+ and was working well, in some point it fail, wan 1 stop and say that it dosent have a physic connection but it does, and i...