Firstly I need to comment the complete absence of DAHUA technical support. We have been desperately trying to contact any DAHUA support and we either get no response despite our repetitive e-mails or we are getting messages that their mail servers are misconfigured. We have repeatedly sent e-mails to all the Dahua related mailboxes we have located on the internet. It seems that Dahua doesn't care for after sales. Only for sales.
The problem
We have paid a fortune to buy some DH-SD6AL245U-HNI-IR cameras. All the cameras presented similar problems After 4-5 days of operation they are stop functioning. One reboots continuously when IR light lights up. Other, blurs the image and zoom and focus functions stop when operating the wiper and it is night. Other camera stops sending image and cannot be accessed by web interface although we can ping it. We have found that all the problems relate to the power supply. In all the cameras we have installed the AC power supplies provided in a ventilated waterproof enclosure near the camera. There is no additional cable between the camera and the power supply rather than the cable that is on the power supply. All the AC power supplies (transformers in real) are supplied by 230VAC online UPS. We have managed to minimize the problems but not to eliminate completely by supplying the cameras with zero ripple 24DC power supplies capable for high currents and by restricting the Laser infrared to 75% of its power. The cameras problems seems to be directly related to the power consumption. In some of the cameras regardless of the high performance DC power supply connected, when operating the laser at 100% of its power they fail. In other cameras when trying to operate the wiper they fail. We are desperate because we are exposed in front of our clients and nobody from DAHUA seems to be caring. Do you have any idea for this problem? There is nothing on the internet regarding this. All the cameras have the latest firmware. Thanks
The problem
We have paid a fortune to buy some DH-SD6AL245U-HNI-IR cameras. All the cameras presented similar problems After 4-5 days of operation they are stop functioning. One reboots continuously when IR light lights up. Other, blurs the image and zoom and focus functions stop when operating the wiper and it is night. Other camera stops sending image and cannot be accessed by web interface although we can ping it. We have found that all the problems relate to the power supply. In all the cameras we have installed the AC power supplies provided in a ventilated waterproof enclosure near the camera. There is no additional cable between the camera and the power supply rather than the cable that is on the power supply. All the AC power supplies (transformers in real) are supplied by 230VAC online UPS. We have managed to minimize the problems but not to eliminate completely by supplying the cameras with zero ripple 24DC power supplies capable for high currents and by restricting the Laser infrared to 75% of its power. The cameras problems seems to be directly related to the power consumption. In some of the cameras regardless of the high performance DC power supply connected, when operating the laser at 100% of its power they fail. In other cameras when trying to operate the wiper they fail. We are desperate because we are exposed in front of our clients and nobody from DAHUA seems to be caring. Do you have any idea for this problem? There is nothing on the internet regarding this. All the cameras have the latest firmware. Thanks