Why is my LF1 LED blinking blue when everything is plugged in? Please make sure your projector is on and not in standby mode. If your projector is off, the HDMI signal may be disrupted. Related articles Why is my LF1 LED blinking yellow when my device was already paired and online? How do I put my Lightform device into pairing mode? Sunset FAQ Quick Start Checklist Firewall Issues on Windows Comments 0 comments Please sign in to leave a comment.