Out of the box never used Description DISPLAY IS UNCLEAR AND UNSTABLE To stabilize and clarify your display, use the AUTO ADJUST function or change the resolution to the display’s optimal setting 1920 x1080 at 60Hz, then AUTO ADJUST . THERE IS NO LED DISPLAY or SCREEN SAYS NO SIGNAL : Make sure you switched to the correct source. Check both sources to see video is on the other source. Check your video cable. It might be corrupt. Swap out the video cable for another one to see if the monitor will work. Check your power plug. See if it is fully plugged in on both the monitor. Brightness: 220 cd/m2. Power Range - Input - 100 – 240V~ 50/60Hz, 1.5A (Max.),Output - 12V DC, 3.3A. Digital Signal Frequency: 30 – 80 kHz (Horizontal) / 60 – 75 kHz (Vertical).