I have a le46C650 it has gone into shop mode anyone know how to switch it of have been into service menu and there is shop mode option but no option to switch it off this happened after removing power for a few hours for eletrical alterations when power restored it said shop mode and it was in demo mode as well which i switched of in tools the picture settings revert to original dynamic settings even if set to natural etc after about twenty minutes .Thanks in anticipation