After watching tv, youtube, or other channels, the hdmi 1 on my Ruko tv stopped working, displaying random patterns on the top half, and black at the bottom half. Power cycle the tv (unplug the power cord) seems always fix this, until next time watching tv, youtube, or other channels. I did not try a factor reset, fearful that I would have to redo the configuration.
The tv is Sharp LC-50LBU591U, the hdmi 1 is connected to a 4k 30Hz source. This seems started after the latest system update dated Dec 18 2020, when the over the air tv channels are listed together with roku channels. I have not readjusted the tv configuration in a long time, except there were a couple of times over the last half year when the picture settings seems changed on its own. I have not tested the other two htmi connectors.
Does any one know what is going on and a way to "fix" this?