Hikvision NVR issues

A

aidy55

n3wb
Jan 1, 2026
5
0
Uk
Ive had my hikvision NVR installed for about 7 years with no issues.

Four ethernet cameras connected

I cant seem to get connected to it. It only has an ethernet port, no wifi and is located in a small wiring closet connected to a ethernet switch

Ive removed it from my wiring closet and tried different room in house but still the same. Ethernet directly into router this time

Also taken off top cover to check for anything untoward

Is there a way to test the ethernet port as thats the only thing i can think of.

If it can't be repaired what would be a good upgrade that will be compatible with my POE cameras and 3.5 inch hard drive
 

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aidy55 said:
Is there a way to test the ethernet port as thats the only thing i can think of.
Click to expand...
If the router ethernet ports have status LEDs for the cables that are connected to it - do they show for the NVR cable?

Does SADP find the NVR? If so - does the found IP address match what you believe it should be?
SADP Tool Mike

SADP Tool

Locate Hikvision cameras on your network

SADP will find Hikvision devices even if they are on a different network segment from the PC its running on.
 
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rksharma said:
NVR RESET PASSWORD
Click to expand...
That's a password reset request file that must be processed by a private Hikvision system. It does not hold a password.
If the NVR was purchased via a Hikvision authorised distributor, you should be able to send the file to their support service.
 
Yea, i should have noticed no blinking light at my NVR ethernet port. Its buried in a patch panel so hard to see.

SADP not showing any devices.

Is this a common fault with these boxes, could something have fell through the top cover and shorted the port maybe.

Im looking at the 7604-nxi, seems to be the best model.

But would prefer to make an attempt at repair if at all possible
 
Last edited:
The TX and Rx signals and are transmitted and received by ethernet transformers connected to twisted pairs of wires.
The transformer windings should read as under one ohm, maybe 0.3 to 0.6 ohms.
This resistance is what you should see between pins 1,2 and 3,6 and 4,5 and 7,8 for a 1Gb interface.
If there is an open circuit it suggests a break somewhere.
There should not be a short circuit between one pair to any other pair.
The pairs should not show a short circuit to ground, though some resistance is normal enough depending on the implementation.
Some interfaces have transient protection diodes to ground, which can, by design, go short circuit given a high enough overstress such as a lightning surge.
 
Chatgpt has helped me measure voltages acrross the pcb. It made a mistake that i had to point out so im reluctant to accept it's finding.

I was instructed to messure volage across the cv33 chip, it should read 3.3v. Its reading 11.89v and chatgpt says the pcb is goosed beyond repair.

Can anyone confirm
 
I do have resistance accross the pins but i think that only determines if the rj45 connector is in tact. I believe it is

Ive checked volage accross cv33, it should be a 3.3v rail and definitely shouldn't be reading 11.89v

We have had several powercuts and i believe the box packed in after a powercut. Maybe worth connecting s surge protector to the new box and possibilly a UPS
 
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