I have a Dahua NVR5208-8P-4KS2E which does not appear to be booting. It was working fine until I powered it down remotely, and then I could not get it to come back up. The unit usually comes back up with a status beep and reconnects to my network. Instead, it appears that the case fan is ramping up in speed for 35 seconds, slowing down for 9 seconds, and ramping up 35 sec. It repeats this cycle constantly with no video output to an attached monitor and is not connecting to the network. I disconnected the hard drive and attempted to boot with the same result. The only front panel light coming on is the blue power light. The HDD light and status light are not coming on. There are two steady LEDs which light on the motherboard (red and amber). I attempted to remove the onboard lithium battery and reboot with no success. Can anyone help me?
NVR5208 not booting
- Thread starter dh1989
- Start date
I am getting video on the VGA port. It reaches a screen that says NVR in white letters. Then it goes black and appears to restart, going back to that screen over and over.
Does your NVR have a Reset Button? Could have had a bad boot up. Might need to reset to factory?
However before that. lets do something first.. Remove all your cables from the NVR and the Power Cable.. Wait for a minute, Then plug back in the power cable only. Power the NVR back on. If you hear the beep plug in the Video either your D-Sub or HDMI. See if the video comes up.. If it does then connect your Mouse. Once the mouse is connected reboot the NVR.. Make sure it comes back online. If it does connect your POE connected cameras 1 and a time however need to let the camera boot up. then you need to reboot the NVR Make sure the NVR boots and the camera comes back online. When and if you get to a Device that the NVR fails you know there is a short in that device somewhere.. If you connect everything and after reboot connecting each channel and all comes back online need to keep an eye on your system for what made it unhappy..
If doing all that didn't work and your NVR has a Reset button, Do a Factory reset. Power on push button wait 10 seconds power off with pushed in button, holding and power back on hold until you hear a beep or upto 60 seconds if no beep NVR will need to be seen by a Repair shop. if new Request RMA..
However before that. lets do something first.. Remove all your cables from the NVR and the Power Cable.. Wait for a minute, Then plug back in the power cable only. Power the NVR back on. If you hear the beep plug in the Video either your D-Sub or HDMI. See if the video comes up.. If it does then connect your Mouse. Once the mouse is connected reboot the NVR.. Make sure it comes back online. If it does connect your POE connected cameras 1 and a time however need to let the camera boot up. then you need to reboot the NVR Make sure the NVR boots and the camera comes back online. When and if you get to a Device that the NVR fails you know there is a short in that device somewhere.. If you connect everything and after reboot connecting each channel and all comes back online need to keep an eye on your system for what made it unhappy..
If doing all that didn't work and your NVR has a Reset button, Do a Factory reset. Power on push button wait 10 seconds power off with pushed in button, holding and power back on hold until you hear a beep or upto 60 seconds if no beep NVR will need to be seen by a Repair shop. if new Request RMA..
bigredfish
Known around here
Yes. I have done that several times and waited over 15 minutes between attempts. I have also tried holding the button on the motherboard, which makes the unit beep a single long beep while on the NVR screen. It resumes boot looping once I release that button.
bigredfish
Known around here
Nothing replaced. It had 4 PoE cams, ethernet, and a wireless mouse. I tried with all disconnected.
If that is the case you will want to be careful connecting your cameras to a POE switch or another NVR. My guess is one of your cameras died in a way that killed your NVR.. Just got done repairing a 5216-16P that was killed from 1 dahua camera. Waiting for the part to repair the camera. Camera can work with Ethernet and 12v power in the damaged state but won't work on POE and can trip or kill NVR/Switch if connected..
I want to make sure I have the reset sequence correct. I powered it on, held the black button on the board down, then powered it off and back on again with the button held down. I heard a single long beep and it displays the screen with the words NVR. It seems to stay on that splash screen until I release the button, then the boot loop resumes.
The system worked fine with all 4 cameras operational until I shut it down. I powered it off remotely using the GUI power off option, as I wanted to safely shut it down before I switched my house over to generator for the monthly generator test run. I had it plugged into a smart plug and usually just cut the power via that, but I did it with the GUI this time.
I tested the power supply and the output DC voltages at the board connectors are spot on, not dropping at any point during the boot loop.
If this is a firmware issue, how do I flash the firmware? I have a USB 2 port in the front and 3 in the rear. There is also an RS232 port in the rear. I have a serial to USB converter.
As far as the cameras go, they are all Dahua PoE cameras. How would I know if one had gone bad, given that they all worked before this happened?
The system worked fine with all 4 cameras operational until I shut it down. I powered it off remotely using the GUI power off option, as I wanted to safely shut it down before I switched my house over to generator for the monthly generator test run. I had it plugged into a smart plug and usually just cut the power via that, but I did it with the GUI this time.
I tested the power supply and the output DC voltages at the board connectors are spot on, not dropping at any point during the boot loop.
If this is a firmware issue, how do I flash the firmware? I have a USB 2 port in the front and 3 in the rear. There is also an RS232 port in the rear. I have a serial to USB converter.
As far as the cameras go, they are all Dahua PoE cameras. How would I know if one had gone bad, given that they all worked before this happened?
bigredfish
Known around here
The only time I've had one get stuck in the bootup sequence was due to a peripheral. 2X. Once with a wireless mouse, used a USB wired mouse and success. And once with a HDMI monitor. Switching to a VGA monitor allowed to bootup.
Other than that I would suspect a problem with the power supply
Other than that I would suspect a problem with the power supply
bigredfish
Known around here
Camera or NVR I typically hold the reset button down for 30 seconds, let go and let it reboot. I dont immediately power it down
Got it. I just did that, let it go, the hard drive spun up and then about 20 seconds later it rebooted and the boot loop resumed. I can try a new power supply. Is there a specific form factor of the PSU I can replace with or should I just find another Delta unit?
bigredfish
Known around here
So there are a few different things that can happen when it comes to the NVRs Power Supply. While same machine little different build because of the OEM form factor of mine and the ones I have repaired.. Could be a power supply on the 52v rail. However could be same issue as I was talking about with being killed with a bad camera as well. Normally when the power supply goes bad it just flashes the front ring on the machine. But that is normally for the 12v rail and only part of the PSU that I have ran into going bad. In my last repair case, The camera damaged some parts to the Mosfet. Now I am not sure if the damage was from camera or if the damage from NVR caused the damage to the camera. I am thinking it was camera to NVR.. Any case the NVR you are working with my guess is that it has only 1 PD for the POE power and if the camera was in fact damaged that caused the system to fail. When the NVR tries to reboot or boot up the system while it goes though the checks that a system does while it is in the boot cycle. If it fails it could get a reboot command and try again setup.. So when you press the button for reset and you notice the NVR comes online just stays there that is because there is again a CHECK in the CHIP that is telling the hardware to pause the loading..
So there is something you might try.. Unplug the power supply, With switch don't really matter just something I do anyway Wait a min, Then unplug the wiring for the POE power of the NVR leaving the 12v plugged in. Then plug in and turn on and see if the NVR comes alive without the 48-52v rail being plugged in.
This again don't explain if the issue is with power supply or the PCB and reason is that the power being removed just kind of removes the nVRs check of Voltage on that rail.. If it boots up and you have Multi Meter you could test it and see if the 48 to 52v is there between the black and white wires.. Then power off the NVR and plug in and check voltage again. If the voltage don't drop out then the damage is to the PCB most likely there are issues that could be on the Power Supply side but normally would just damage the rail all together..
About how to know if camera is damaged. Hate to say that you wouldn't unless you connected camera to a POE switch or NVR and have it cause the same issue. Or can.. In my case I had to find out after trying to power the cameras on my switch. All the ones were coming on line besides the dead one and it killed the port in my switch as well.. So knew that was the dead camera took apart and just doing a visual of the PCB I found the issue area in my case it was very evident what the issue was. Can see in the pictures below the damaged one has scorched PCB area.. The second picture shows what the part looks like from a good POE cameras power supply..
So I am clear, I have seen this type of damage only in 2 different cameras that I have repaired that had POE issues. Normally the issue is that there is nothing when plugged in and so no damage to switch or NVR just no power. So in my case that was damaged portion of the camera. Your cause could be something different.. But thought I would post the damage part and what the part normally looks like if it wasn't blown out..
Buying a replacement PSU just need to make sure the listed item has same plugs and power requirements that is for your current PSU.. They offer different ones because one in my Alibi won't work for my Dahua or Amcrest but will work on my Ezviz and Alibi NVRs..
So there is something you might try.. Unplug the power supply, With switch don't really matter just something I do anyway Wait a min, Then unplug the wiring for the POE power of the NVR leaving the 12v plugged in. Then plug in and turn on and see if the NVR comes alive without the 48-52v rail being plugged in.
This again don't explain if the issue is with power supply or the PCB and reason is that the power being removed just kind of removes the nVRs check of Voltage on that rail.. If it boots up and you have Multi Meter you could test it and see if the 48 to 52v is there between the black and white wires.. Then power off the NVR and plug in and check voltage again. If the voltage don't drop out then the damage is to the PCB most likely there are issues that could be on the Power Supply side but normally would just damage the rail all together..
About how to know if camera is damaged. Hate to say that you wouldn't unless you connected camera to a POE switch or NVR and have it cause the same issue. Or can.. In my case I had to find out after trying to power the cameras on my switch. All the ones were coming on line besides the dead one and it killed the port in my switch as well.. So knew that was the dead camera took apart and just doing a visual of the PCB I found the issue area in my case it was very evident what the issue was. Can see in the pictures below the damaged one has scorched PCB area.. The second picture shows what the part looks like from a good POE cameras power supply..
So I am clear, I have seen this type of damage only in 2 different cameras that I have repaired that had POE issues. Normally the issue is that there is nothing when plugged in and so no damage to switch or NVR just no power. So in my case that was damaged portion of the camera. Your cause could be something different.. But thought I would post the damage part and what the part normally looks like if it wasn't blown out..
Buying a replacement PSU just need to make sure the listed item has same plugs and power requirements that is for your current PSU.. They offer different ones because one in my Alibi won't work for my Dahua or Amcrest but will work on my Ezviz and Alibi NVRs..
