IR Camera problem

[watchdog]

I have a bunch of IR cameras playing up . Picture ok in daylight but at night just a grey screen with very faint images. I'm thinking that the IR leds have died but the cut filter is still working in low light & hence just getting an ambient background IR picture. Any help ?

[Chimp]

you using a decent power supply? be weird that a lot of tehm owuld all fall over at the same time

[watchdog]

They are in a school & have been working for some time. They may not have stopped all at the same time. They have all just been discovered at the same time. They only search the recording when an event happens.

[Chimp]

are you using a decent power supply?

[Drift]

LED drivers cactus, assuming its a decent camera and has a driver circuit.

[TheAlarmGuy]

I know that some of these cameras can have a decent current draw when IR is active, the particular brand I use goes from 500mA during normal lighting conditions to 3.5A when IR is active. Possibly PSU is on its way out?

Failing that, check lens level and AGC settings on the camera. Or just replace cameras, we all know they lose image quality over time due to caps burning out etc

note: setting lens level too low will cause image to stay b/w during the day, this puzzled one of my guys for quite a while