Hi, I’ve had the Yamaha RX-V375 for a fair while, just running Gale gold monitors as front L+R and a matching Gale centre. Ive just upgraded to a Sony KD49 XH8196, and so 4K etc. The Yamaha seems to be struggling - initially I was having to switch source back and forth for it to recognise and process different sound standards, but now it’s giving me nothing apart from on PCM (so I lose the Centre). HDMI in the ARC from TV to AVR. I’ve tried changing the cable etc. Any ideas? Seems a shame to be considering replacing the AVR, but maybe it’s just a bit outdated now??