I am trying to connect my LG C1 to my wired Sennheiser RF 175 speakers. My tv is also connected to a Sonos Beam soundbar via EARC. Having selected Wired headphones on the Sound out menu, the headphones come on for about 3 seconds and then both the TV and Sound out menu flick back to HDMI. I have tried using two further wired headphones and also some Bluetooth headphones but all show the same result. The only way I can get the headphones to stay on is if I take the HDMI lead out of the tv, thereby disconnecting the soundbar. I didn't have this problem with my previous Panasonic TV because as soon as I switched on the headphones they came to life together with the TV. I can't see any LG menu item that I am missing. I have also logged the issue with LG - no reply yet. Any ideas please?
