What should I do if the surveillance camera has no image?
? 1 It is necessary to check whether the power supply is connected properly, and whether the power supply voltage meets the requirements. Power supply error DC12V*10% AC24V*5%;
? 2 Check if the BNC head or video cable is in good contact;
? 3 See if the lens auto iris is open;
? 4 Check if the video or DC-driven auto iris lens control line is short-circuited to the ground; check if the video leaks, causing the CCD board video to burn out all the way.