Hello, I have a 50" Hisense Roku. I tried to connect the TV to my pc with an hdmi cable and it did not work. I tried in the 3 ports and nothing happened. However, when I tried to reconnect receiver and Chromecast, the ports had stopped and just says no signal. I tried to reset the TV, remove and reconnect ports, upgrade software and still have the same problem. Is it possible the hdmi cable has fried the ports?