hello mate. thanks for your suggestion.
Sorry if I did not give a clear explanation.
Channels 1-4, currently no cameras are plugged and it should have displayed "Video Loss" on monitor instead of recording.
It's like as if the Channels 1-4 are locked to recording only.
When I plugged a camera in any of the ports (1-4), there is no display and it keeps showing R on my monitor meaning Recording.
Could it be a faulty motherboard?