Power supply problem
It can be judged whether the camera is broken or the power adapter is broken. If the adapter is damaged, it can be replaced. Need 10 yuan.
Image problem
If the adapter is normal, there is something wrong with the camera. It is recommended to return to the factory for repair.
Infrared lamp problem
There is something wrong with the infrared light. Just return to the factory for replacement.
Image quality problem
It may be the failure of internal CCD and circuit board, so you can return to the factory for repair or replacement of parts.
Maintenance suggestion
It is not recommended to repair it yourself. Finding a supplier is the best policy. During the warranty period, if the fault is caused by non-human factors, it is generally free. If the warranty period expires and the maintenance fee is expensive, for example, close to the price of the camera, it is better to buy a new one, and the price of the camera is also very cheap now.