Hi all, I'm having issues with a recently purchased LG OLED55B7A. When viewing content through my xbox one x or apple tv 4k, the picture occasionally goes out, displaying a gray screen. I've attached a photo that shows the condition. The issue is intermittent, and may go a week or two before happening again. The apple tv and xbox one x are all plugged into an Onkyo TX-NR676 receiver, with receiver of course hooked up to the tv. I first assumed it may be the apple tv 4k, so replaced that. Once that didn't work, replaced the receiver with a second TX-NR676. After that failed to fix the issue, I replaced the HDMI cables going from the apple tv to the receiver and receiver to the tv with new ones. Issue still occurs. New HDMI cables are the premium high speed hdmi cables from crutchfield and support 18 Gbps max bandwidth. To restore picture, I either power on and off the receiver, or press the settings button on the receiver controller. The latter method brings up the Onkyo's settings menu (which displays correctly) after which I can press the settings button again to return to the selected input, which will now display the picture correctly. Has anyone experienced this issue before? Any idea what the issue could be? Thanks you in advance for any help provided!