I have the same issue on my 50" and I'm sure it's out of warranty, but it should be a firmware update I would think, or at least a recall. Mine only seems to do it when something is plugged into the HDMI ports and are on. I have to unplug my Roku from the HDMI, then the pop ups seem to stop.
Annoying persistent AV popup
in LG webOS Smart TV Questions
Posted
I have the same issue on my 50" and I'm sure it's out of warranty, but it should be a firmware update I would think, or at least a recall. Mine only seems to do it when something is plugged into the HDMI ports and are on. I have to unplug my Roku from the HDMI, then the pop ups seem to stop.