All Annke DVR or POE NVR systems
Other cameras‘ image is normal, both in the daytime and at night, but one or several cameras‘ image is wrong, such as fuzzy, flickering, snowing, staying black and white in daytime and so on. Please refer to this instruction to have troubleshooting.
1. connect camera C1 to channel A1 with working cable B2 to confirm if it is cable B1‘s problem.
2. Connect camera C1 to working channel A2 with working cable B2 to confirm if it is camera C1‘s problem.
3. Connect working camera C2 to channel A1 with working cable B2 to confirm if it is channel port A1‘s problem.
Please try all methods above to confirm which part is wrong so that we can give you the correct replacement.
Some pictures or short videos to show the testing result will be helpful.