dark picture problem with bullet cameras

[Rebco 0]

I have a customer with a problem with there nnuvico bullet cameras. i have 2 power supplies one in the store and one in the gas attendants office. The problem is the one with the gas office all 4 cameras have become dark all of a sudden. Any one have an idea why? TAke a look at the following pictures.

 

http://i183.photobucket.com/albums/x44/fr2001x/test.jpg

 

http://i183.photobucket.com/albums/x44/fr2001x/parkinglot.jpg

 

http://i183.photobucket.com/albums/x44/fr2001x/gasbooth.jpg

[scorpion 0]

Can you take wall transformer, and hook it up to one camera, and see if the video comes back in.

 

I truely do not know the problem, but I sway to the side of not enough power to the cameras.

[Deluxecctv.com 0]

Hello,

 

Looks like your bullet cameras are not equipet with the Auto Iris feature. What cameras are you using. My second guess would be the power source. Is this happening on all the cameras or just one?

[CraigVM62 0]

I would also guess it is the power supply if that is one thing the problem cameras have in common.

If the power supply shows to be OK. I would then check the image at each camera with a portable field monitor.

If image is good at camera, have you disconnected the camera feed in at the DVR and hooked it directly up to a monitor. I ask this as I had one customer go in and adjust the camera settings "brightness, color, tint" at the DVR to accommodate the image on a very bright day, not understanding why images became very dark at night.

 

Lastly would be if all problem cameras share a video balun hub.

 

I would be interested in hearing what you find out.

 

Good Luck

[rory 0]

Check Video Connections, and power them all locally, with a spot monitor at the camera. Unfortunately this means either going up to them by ladder or taking them down to check them, but in the long run it will save time.