Finally found something that worked (rather than the usual, reset your tv/router nonsense)
Remove back case of tv and you may well see the problem. Kinked and twisted ribbons leading from the WiFi module. CAREFULLY flatten these out. This fixed the wifi AND the intermittent Lan connection issue.
Popup messages: Wired Lan cable disconnected / Wired network is connected
in LG TV and LG webOS Smart TV Discussion
Posted · Edited by Richy Ho
Added you tube video
Finally found something that worked (rather than the usual, reset your tv/router nonsense)
Remove back case of tv and you may well see the problem. Kinked and twisted ribbons leading from the WiFi module. CAREFULLY flatten these out. This fixed the wifi AND the intermittent Lan connection issue.