Anyone replaced PSU and case fans in Hikvision NVR?

After doing some research, I think I am going to go with the Sunon fan. It is a little under-spec'ed but I think it should be fine considering I am not using my NVR at full load. It is roughly 9 dbA quieter so I think it should make a difference.

Model
MF40201V2-1000U-A99

Size
40X40X20

Vapo Bearing

RPM
6000

CFM
7.7

dBA
21.0

文件檔案視窗

cctvukuser said:

I took the lid off mine permanently

Click to expand...

If you take the lid off you might as well remove all fans except for power supply fan. With the lid off you no longer are able to draw or blow cool air across components except for those within the cone of effect from the fans themselves. The box being sealed is what allows fans to blow/draw cooler air across all interior components and moving air leeches more heat from components than stagnant. Although in a lidless configuration at least heat can rise out of unit there is the risk of shock as well. Just my 2 cents and I might be overcharging. Have a good one and good luck.

I relocated mine to the server closet and send the 4K UHD HDMI to a HD BASE T ExTender via cat 6 to 70 in Samsung UHD TV NO LAG using Mouse with a USB To LAN adapter

AV Access 4KEX70-H2

The benefit for me was I now use the POE and the cameras are backed-up as is the NVR on same UPS. The above extender also works fine as IR extender too. I also just replaced 2 2TB drives with 1 Seagate Skyhawk 4TB NVR drive. $115 From Amazon

One thing that can add considerably to fan noise is if a fan guard of a certain shape is mounted close to the fan itself.

As the blades move next to the guard's openings, shock waves are created that make the fan howl.

Look up how an old-fashioned siren works. Rotating disks with holes in them spin next to each other. A poor fan guard design can create a siren.

Moving the fan so its blades are farther from the guard, switching to a more "open" guard, or cutting out the guard area entirely, can quiet a little fan by a lot! I haven't seen this NVR, so I am only speculating, but does it use an array of punched holes in sheet metal to form the fan guards/openings, and are the fans right up next to these openings?

The NVR is a 1RU case made to be installed in a rack. The problem fan is about 1.25 square HIGH revolution 4 blade in the PS. The other fan is fine.

Ideally Hikvision would write a Firmware option to lower the fan speed base on inside temp. I tried sound proofing foam inside entertainment cabinet and gave up after 3 months.

All things being equal, it is always better to keep electronics as cool as possible. So it really is best to just run the fans full blast from that perspective.

But manufacturers have realized that people prefer their PCs and other gadgets to be as quiet as possible, and newer PCs are very quiet, and they do throttle fans to help with this, of course.

The slim form factor of this 1 rack height case does force them to use that tiny fan, I guess. And like you point out, the high RPM required of such a small fan in order for it to provide effective cooling, makes it really loud.

If you could modify things to use two or three slower small fans to do the same job, that might work. Or if you could modify the case to accept a larger diameter, low RPM fan set up to pull or push air through the PSU, even if you have to cut holes in the case and PSU, and mount the big fan on the outside of the case.

That would be an ugly kludge, but if looks are less important than function, and it doesn't need to fit in the 1RU space, it's a possibility.

Hi guys, here my 2cents.
As many of you I had trouble with the extremely noisy fan mounted on my DS-7608NXI-I2/4S (single, Nidec 40mm, fan) always spinning at the max speed.
Changed with a Noctua NF-A4X10 FLX which is definitely spinning much slower (5000 RPM) and the noise dropped significantly now.

I did not find an increasing noise due to the airflow through the cabinet holes.
The noise went from 48 db.A to around 32 db.A, measured outside the closet which is hosting the NVR.
Temperature at disk raised from 23°C to around 34°C but still pretty far away from the 45/50°C Threshold.

I hope this may help.
Cheers

Heya,

I have been reading on this thread and got me thinking maybe a 200+ W ACDC Brick might work and create a little backplate to cover the removed PSU, and create a loom which can feed back to the connections only if all the voltages are the same if not migth need a DC to DC converter either to boost or buck the other power connections:

I haven't for got a Hikvision NVR yet but planning to get one and the one they have available is the POE ones which means its gonna be noisy.

I was wondering if someone would be kind enough to to use a multimeter and check the voltages of the pins from what I can see on images on google, is that there is 2 connectors:
One is a 6 pin molex with 3 yellow and 3 black wires and another is a 2 pin molex with one red and one white wire

My best guess is that the
Yellows are +12V,
Blacks are GND
Red are +5V
but White maybe -5V or is possibly GND

This is only a guess looking at the schematic I found online here, but sometimes manufactures do end up changing wire colors if requested by the buyer
If the url doesn't pop up:
My advise is to try firstly with a PSU disconnected and run a continuity test (test which makes the multimeter beep when you contact together) between the black wire and white wire to see if they are directly connected, if they don't then connect the PSU and run a DC test to see if its -5V. Then after that then check to see what the other pins are.

P.S make sure to have the negative side of the multimeter connected to the black wires, I'm also guessing from the looks of the schematic all black wires are common (might want to do a continuity test on the blacks to see of they all connected and same for the yellows too but again do it when the PSU is off and disconnected).

If the assumption is correct then its a matter of creating circuit for positive and or negative 5V DCDC converter to be dropped down from a +12V common rail off the brick.
Another thing which we could be able to do, knowing that we created a 5V power line is mount 2 Noctua 40mm fans like this, allowing for air circulation.


Bit of a long winded way of doing it but might see a POE which runs very quite, the only thing we have to be careful is making sure we have the right voltages given to the right places and we could go bigger on the power brick depending whats available on the required voltage and if you want to go even safer use a medical power supply brick with the required voltage.

So what you think?

Mo