I have a PC to AVR to TV. All via HDMI. My problems is sometimes after PC and AVR on, then I switch on the TV, the AVR will switch itself off. Sometimes after switching off AVR wall outlet and switching back AVR on, AVR stays on. Sometimes problem is only settled after I reboot the PC. Some days the AVR stays on without any problem. I am using a Xiaomi Redmin A55 4K 55in and Yamaha RX V367. What is the problem?