fred0503 0 Posted December 19, 2018 Hi, can anyone help me with this problem i have? In the image i have attached there is a faint horizontal static line going through the image. I have changed the BNC cable but that did not fix this issue. The camera is a Dahua HAC-HDBW2221RP-Z. This camera has a motorised zoom and when i use the zoom, the camera seems to turn off and back on. Not sure if these both issues are linked. Any help to solve this issue would be greatly appreciated. Share this post Link to post Share on other sites
tomcctv 190 Posted December 19, 2018 Hi. Cvi camera. Sounds like a power supply problem. if you alter the lens and camera goes dead or off that is a good sign. what size power supply are you using and size and length of power cable Share this post Link to post Share on other sites
fred0503 0 Posted December 20, 2018 Hi, thanks for replying. My thoughts were power supply. I have tried 3 different 12v 2a power supplies but same problem every time. The length of cable is 30m, Annke brand. I have ordered a 12v 4a PSU to try. Share this post Link to post Share on other sites
tragic_audio 1 Posted December 21, 2018 (edited) can you measure how many volts at the end of the cable? What does the cable you use look like? Is there one coax and one power supply? or are all the wires the same? If you use a ready-made cable from the manufacturer, it is usually the cheapest and most whimsical cable. Edited December 21, 2018 by tragic_audio Share this post Link to post Share on other sites
