I have been troubleshooting this for months. My HDMI ports intermittently keep displaying No Signal message. Currently I have an AppleTV and Nintendo switch hooked up. I have troubleshot the Nintendo Switch because at one point it was exclusive to that device. If i just unplugged it and plug it back into the same port the picture still has no signal.When the No Signal message would display I would have to change HDMI ports from port 2 to 3 and the picture would come back. Then hours, maybe a day or even a week would pass without issue on port 3 and then it would display No signal on port 3. So I would switch it back to port 2. This would continue to repeat. I had the switch replaced thinking it was the switch but then it started to happen with the Apple TV as well. So I got on the phone and talked with LG and they said it was probably the mother board. Just got that replaced yesterday and it still has the same issue. Getting frustrated. The one thing i did figure out yesterday is if i unplug the TV from power for 2-3 minutes and plug it back in the picture will come back with out having to switch hdmi ports.
Have any of you had this issue or know a fix to this.
Any help to this problem would be greatly appreciated