1) How is the camera being power up?
Using Mispan / POE Switch / Injectors?
Possible to provide us the model as well?
If the midspan & is it being connected into a non-PoE switch port or POE Port?
Connecting the midspan into a PoE switch / POE Port can cause the midspan to not output the correct PoE because it senses PoE coming from the switch. Please try connecting to a non POE switch / POE Port.
2) Is there any power surge / trip recently on site?
3) Have you tried to upgrade the camera FW to the latest & perform reset factory default ?
Below is the link to download the latest FW 6.20.1.3 for P5635-E :