"If you do not see any video or Setup Menu displayed: Verify the blue power LED is on. Try pressing the HDMI or AV keys on the remote to switch the outputs. Verify the monitor is set to the input used. Verify the monitor and HDMI cable are good by swapping or trying another device on the input." ---Quote from "DV-S1 Sprite Manual revision 4.00 for firmware version 20210416" (Source: medeawiz.com/Downloads.html)