Hi everyone just recently started having this issue of cameras offline after power cut during the night,( never used to happen) the NVR reboots itself and powers up ok, but loses its online status and i am unable to connect remotely when away from home. I can connect with mobile phone app hik connect, when in the house and on the Lan but can't connect when I leave home. Check the NVR status and it says "Offline", so up in the attic and after going through the settings it comes back as status "online" and is fine until the next power cut and it's all to do again, (saving settings each time). Is there a possibility it could be a small battery on the pcb? Needs replacing. Details attached. DS-7604NI-K1 / 4P(B) is the NVR. Many thanks for any help.