Cameras won't switch to BW mode

[alvinyorkie 0]

I have 3 cameras:

Model RJ-3152 Hongkong R.J. Technology

The all worked perfectly at first. Then one started showing a blank screen at dusk when it should switch to BW and IR. Now a second one is doing the same.

The third camera is still working well.

At dawn, all cameras come on and work fine until dusk when two show a 'video lost' image.

The IR is on at night on all three.

Any ideas what is causing the problem?

I am running Geovision 8.3.

[vin2install 0]

Try changing your power supply. It seems like when the IR's come on then the camera would be pulling too much current for the defective power supply.