Cameras make a loud clicking oise

Hi there, I have 2 floodlight cameras (wired) and a doorbell 3 plus and all constantly make a regular clicking noise. They all make the noise when activated in live view and also on playback of video, even if they weren't live at the time. It happens in the daytime as well as night. It's driving me crazy! I've seen this mentioned a number of times in this community but can't find a solution anywhere. Your help in solving this would be greatly appreciated. Mark