Camera not detected, showing no video. I checked the 5mp ir hd camera with other dvr it worked. Faulted dvr connected with new 2mp colrvu camera.

If your DVR does not support 5MP it will show as NOVIDEO. Hence you connect to DVR where it works, ente OSD menu and lower down resolution to 2MP and then connect to this DVR.

EDIT: Sorry i havent seen attached image with model. This one does accept 5MP. So other problem may be that its not POC, while other DVR is. How are you powering camera?
 
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If your DVR does not support 5MP it will show as NOVIDEO. Hence you connect to DVR where it works, ente OSD menu and lower down resolution to 2MP and then connect to this DVR.

EDIT: Sorry i havent seen attached image with model. This one does accept 5MP. So other problem may be that its not POC, while other DVR is. How are you powering camera?
Having a seperate 8 channel power supply at site. For checking I used 12v 2A power supply to check the camera.
 
Does your camera by any change have a small button or 2 wires to change video protocol? If yes try holding button for 5s or connecting wires for same duration. Switching from TVI/CVI/AHD/CVBS if ti yield any results.
 
Would need to know the 5mp camera model you are using? Maybe it is SDI, Not supported. As said before could be a toggle on the wires where you can change format, Might be that it don't like the format of the camera using Auto in the DVRs setup so could try and set that channel for the type of camera it is rather then leaving it on Auto.. If your DVR has that option.. IF the camera don't have toggle, and don't like the format of AHD, or CVI and can't change to meet that format in the DVR for that channel and the camera isn't able to be changed from the native format that it was built at.. Hikvision is TVI, Dahua is CVI and so on..

Sometimes there is 2 BNC connectors on the wires. If there is the other one normally is CVBS and I would connect to that and test that it is at least working.. If you have a CVBS connection that you have to connect to on the PCB like some of my older Analog cameras, Test with CVBS, If there is video out you at least know the camera is working.. Checking the IR only says that the camera is powering the IR, In some cameras the IR and Power to the Camera are on the same wires and don't require the camera for the IR to come on just power and the LDR to detect there is no light for IR to come on even when camera is dead..

Model of Camera? Or Brand?
 
Does your camera by any change have a small button or 2 wires to change video protocol? If yes try holding button for 5s or connecting wires for same duration. Switching from TVI/CVI/AHD/CVBS if ti yield any results.
No button to change mode. Two wires one for bnc connector and another one for power supply
 
Another thing some cameras have toggles inside camera, just like some have cvbs wire that you plug onto pcb for testing and or spot setup. Might look in camera. Outside of that if it is 4-1 camera that means your setup would be OSD setup.