Had this problem with a Swann camera from new, was replaced under guarantee.
Then later had a defective cable to another camera, the DC kept getting cut. That camera then also failed to a pink colour. I replaced the cable and camera.
I believe the problem is that there is an IR filter which has to be switched out for night operation and switched in for day operation. This I.R. filter operation can be damaged, probably by poor DC supply or by transportation shock, so the I.R. filter gets stuck out and gives the terrible colours.
Handle cameras carefully and make sure there is a good D.C. power supply to them.
Colin
