Had a strange problem today Had a dome camera that appeared to be burned out when I put a local power supply on it it worked fine the problem appears to be interference with the power not the video signal. Running 12vdc siamese cable and voltage at camera appears fine. am going to run power over a seperate shieled cable. This install has been running fine for two years. any ideas what caused this? :?:

try a different camera on the end of, &, how long of a cable run?

cable run was 184 feet using siamese no voltage loss at camera and plugged camera in with seperate 2cs wire for power that was only 20 ft run. Did change out camera with a 24v ac model and had no problems still cannot find where the interference came from

The power board on the camera can do that when it gets hit .. or just goes bad. Normally happens on cheaper cameras.