Camera image only works during the day

Camera image only works during the day

Possible causes

1. The power supply is weak for the camera — if you have multiple cameras on one PSU, check that the PSU has enough power for the entire system.
2. There's a contact resistance in the power line — check connectors and all joints.
3. Power cables have too small a cross-section or are too long (conductor resistance can be calculated using Ohm's law).
4. The PSU may be weakened by long-term overload (operation above its rating) and can no longer power the system sufficiently — even though no-load measurement may show 12 V.

Solution

1. Replace the PSU with one of the right rating — consider camera count, conductor cross-section and length.
2. Plug only one camera into the PSU and test whether it works overnight.
3. Inspect the entire camera-system power chain.