If anyone can suggest what may be causing this issue it would be much appreciated.
We currently have a Swann DVR4-4400 - 4 Channel 720p Recorder & 4 x PRO-A850 Cameras installed. At night 2 of the cameras have developed vertical lines, the lines are fixed and disappear in the daytime. The other two cameras are not suffering from this issue.
In the attached picture you can see the white lines that appear, the other camera only has a small section of white lines in comparison.
This only started happening recently, any ideas as to what could be causing it?
