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What software / app do you use to remotely access the DVR's? I use a VPN to connect to my home network, then I can monitor both NVR's at the same time. It should be possible to do the same using port forwarding, this is not very secure. David

Should be possible, how do you remotely access them at the moment? David

when large homes were being powered with dc, they quickly realised that large conductors were needed over short distances. AC was the way to go, pushing power at high voltages (300kV ish).

can you post the camera / NVR model number and firmware release?

Ohms Law, I first learnt this in 1974 and still use it today. This is for DC, AC is subtly different.

@Alex_SA, The extender cable will have resistance and will lower the voltage at the camera connector. The motors, siren, and lights increase current draw lowering the voltage until the camera powers down. Current draw falls, voltage increases and camera powers on. As @johnfitzy says, move the...

have you tried a new / different power supply? David

@Alex_SA, as a temporary workaround to reduce processor load, have you tried..... firmware upgrade / downgrade. reduce video resolution / bit rate / frame rate change video codec / disable audio / change h264 profile Have you checked the system logs for watchdog / kernel crashes? David

@pazz, Did you revert back to ONVIF? David

@pazz, I had a similar ONVIF problem and ended up adding the cameras to the NVR using the custom protocol option and the RTSP protocol. I think two different ONVIF standards agreed a lower common ONVIF standard to offer "fluent" video resolution only. The camera offered three RTSP URL streams...

Which of the green and black ethernet cables connects to the NVR LAN port? Using the TV screen and mouse, do you have access to the NVR setup screens? If so could you post the network setup page? Can you also post the IP address assigned to your smartphone or tablet? Your NVR model number is...

the eero 6+ is a wifi mesh router. Is your old router connected to the eero 6+? Could you post a simple diagram of your network? David

What model router / cameras / NVR do you have? Your new router probably uses a different subnet, should be easily fixed. David

Your home router usually creates and manages the home subnet. You connect the computer to the router using the router wifi or ethernet ports. David

I don't think the DVR is in TFTP recovery mode as Wireshark is not seeing connect requests being sent to the TFTP server. I think your DVR MAC address ends in 3C:EC:63 and is linked to 192.0.0.64. Can you find the DVR MAC address? It may be on the serial number plate or on a sticker near the...

@Malk, I found the same, you need to check which board you have. I'd try to load an older version of the firmware, there are no guarantees this will work. You already have a brick..... Looking at other forums I get the sense that Hikvision retired the TFTP recovery route a few years back, makes...

what region is your DVR?

No, it would clearly show the TFTP protocol in use. The Hikvision TFTP server should be on the default port of 69. Is that the only data you see from the DVR IP address? Did you start the Wireshark capture before you switched the DVR on and then captured for at least 5 minutes? Line 664 shows...

Yes, Ctrl+U is used to interrupt the boot process when connected to the device serial interface when using putty / securecrt etc.

you'll be looking for TFTP protocol packets coming from the DVR IP address and going to Laptop IP address. if you see them going to another IP address change the fixed IP address of your laptop to that address. If you don't see TFTP packets from the DVR then TFTP is not active, you can post a...