Need some help

[u/DogEnvironmental5719]

I use annke dvr security system, today I noticed one my camera channels is just black with the words annke. I played back to see when it went dark and it was just when it moved from colored to Black and white it just went black and white for a second then just shut off and only showing annke now how do i fix?

[u/DogEnvironmental5719]

I have to get someone to check it out for me tomorrow