Our TV, an LG, has 3 x HDMI inputs and one of them is also ARC which I have connected to a sound bar. The ports have been playing up recently and although I have got round the issues I am intrigued by what has caused them.

Our Bluray player, another LG, stopped working altogether with this TV although it works fine with others. I got round that by downloading my Blurays, and some other stuff, to a media server (Plex on Linux) which is now plugged in to HDMI 1, where the Bluray was. The sound bar is still plugged in to HDMI 2 / ARC and works fine although it does take a few seconds for it to wake up. I use HDMI 3 for a Facebook Portal but whenever I plug it in, it knocks out the HDMI 2 / ARC output. Again, there is a workround. I just don't plug it in unless I am using it. Zoom and WhatsApp meetings don't need the soundbar anyway :-)

It is, so it seems, a known issue on LG TVs and they suggest replacing the HDMI circuitry. Which I am not going to do. Anyone else experience anything like this or have any idea why it should happen?