I'm trying to mirror my Macbook Air screen onto my Hisense TV and nothing is working. I've tried using an HDMI cable and my tv screen goes black and when I select my TV on Display my computer screen crashes. This HDMI cable works fine with the same tv and other devices. Also tried three different mirror apps. When I try to connect via an app after checking both TV and Mac are connected to the same network, both the computer and tv engage but somehow the connection fails after a few seconds on all three apps. Has this happened to anyone? Any help please?