Q1 How do I troubleshoot a black screen on my 4K RX device?

If you are experiencing a black screen on your 4K RX device, first check the resolution settings. If the default output resolution is set to 3840x2160p, and the display does not support 4K, the black screen may occur. In this case, try lowering the output resolution to 1080P or 720P by pressing and holding the RST button on the RX device for about 1 second to switch to different resolution outputs automatically. If the issue persists, it may be helpful to check the connections, cables, and p