You also want to make sure that the device is turned on. I have a Sharp 4K smart TV, and I had 4 HDMI ports, but can only use the one for Chromecast. My PS4 is usually powered off, so it will not detect it.
You also want to make sure that the device is turned on. I have a Sharp 4K smart TV, and I had 4 HDMI ports, but can only use the one for Chromecast. My PS4 is usually powered off, so it will not detect it.