After unplugging the ethernet cables of my PFL6907h to the router - in order to move the tv somewhat - and than plugging the cable in again, the tv cannot find the router anymore when trying to connect to the router through ethernet. This used to work without a problem. All possible causes have been eliminated (cable and router work fine when connecting a computer, television connects to router using WIFI, restored tv to factory settings, nothing helped). TV simply cannot find router anymore trying to connect through ethernet. What could be the cause or what could be the remedy?