Lost video on TV1 yesterday and noted changes to Favorites menu via TV2. Was not experiencing stormy weather in area. Had been watching TV1 in front room. Left room to do laundry. Came back to find no video on TV1 but had audio. Checked TV2 in other room and had video and audio, but upon checking Guide settings, noticed that personal favorites had been replaced by defaults. Tried unplugging receiver for several minutes to see if problem would resolve, but no luck. Called Samsung @ TV and tech support person said he also has DISHNetwork and had same problem at one time. Told me to again unplug receiver and TV also, then replug both, wait for receiver to boot. Did but still get audio but no video. Brought small TV2 up to receiver, connected it, at least got a lighted screen, but no image. TV1 is a bit large for me to swap out for TV2, besides are system settings specific for each TV and swapping out really won't prove anything? Any suggestions?