Hikvision CCTV distorted picture

Eireann81

I have a Hikvision CCTV system in my house, with 8 cameras in total. One of the cameras has a severely distorted picture, and I'm hoping that by sharing the footage, someone here could help me troubleshoot and resolve the problem.

I've already tried swapping out the camera with a known working camera, and I've also swapped the power supply with a new one. From googling, it seems that I might have either a ground loop problem or a problem with the coaxial cable.
I really hope that it's not an issue with the coaxial cable, because I have no way of changing that cable - it went in when the house was being built.

I don't think there are any other power lines running close to the camera's power line. If it is a ground loop problem, would a ground loop isolator resolve the issue? Any help would be appreciated. Thanks in advance!

https://www.youtube.com/watch?v=ccMfMJYXKw4

altor

Eireann81 wrote: »

I have a Hikvision CCTV system in my house, with 8 cameras in total. One of the cameras has a severely distorted picture, and I'm hoping that by sharing the footage, someone here could help me troubleshoot and resolve the problem.

I've already tried swapping out the camera with a known working camera, and I've also swapped the power supply with a new one. From googling, it seems that I might have either a ground loop problem or a problem with the coaxial cable.
I really hope that it's not an issue with the coaxial cable, because I have no way of changing that cable - it went in when the house was being built.

I don't think there are any other power lines running close to the camera's power line. If it is a ground loop problem, would a ground loop isolator resolve the issue? Any help would be appreciated. Thanks in advance!

https://www.youtube.com/watch?v=ccMfMJYXKw4

If you have tested with another camera it may be the cable.
Have you tried having the bnc connections changed?

Eireann81

altor wrote: »

If you have tested with another camera it may be the cable.
Have you tried having the bnc connections changed?

Thanks for the reply. I replaced the bnc connections, but unfortunately it didn't improve the picture.

pegasuspub

is this camera on a different power supply? is it in the same building and on the same esb connection/fuse board?
how many power supplies are you using?

Eireann81

pegasuspub wrote: »

is this camera on a different power supply? is it in the same building and on the same esb connection/fuse board?
how many power supplies are you using?

Thanks for the reply. There is a separate power supply for each camera. It's in the same building and fuse board. I tried turning off all of the other cameras, but it didn't help the picture distortion.

pegasuspub

have you tried swapping this input on the dvr, ie swap 3 and 4 just in case its the dvr,
i did see one 16 channel hikvision dvr with a similar distortion on the picture but it was on 4 channels of the 16, updating the firmware of dvr fixed it.
the picture fault does look similar to an earth loop issue but i have only seen earth loop faults in large buildings with mains 230 volt cameras i'm afraid.

Eireann81

pegasuspub wrote: »

have you tried swapping this input on the dvr, ie swap 3 and 4 just in case its the dvr,
i did see one 16 channel hikvision dvr with a similar distortion on the picture but it was on 4 channels of the 16, updating the firmware of dvr fixed it.
the picture fault does look similar to an earth loop issue but i have only seen earth loop faults in large buildings with mains 230 volt cameras i'm afraid.

Thanks for your input. I just tried swapping the inputs on the DVR, but unfortunately it didn't make any difference. The firmware is up to date too.

I reckon I'll have to take the camera down, and try changing the bnc connector again. If that doesn't work, I can only guess that the coaxial cable is broken somewhere in the wall.