hello everyone, I added a new camera to a 264 supported dvr device. I pulled the camera cable cat5 and used baluun as the connection device. everything is normal, the things I always do, but this time I couldn't get a picture from the camera I just added. There is enough power to make the cameras red, I tested it too. Then I checked if the adapter power was the problem. I saw the adapter as 12v 0.5 A. I could not solve the problem because I did not have much spare material at that time. What could be the source of the problem?