Hikvision DS-7604NI-K1/4P NVR - no power issue

L

lee_evo

n3wb
Nov 28, 2019
5
1
Bournemouth
Hi, looking for some help or advice with my nvr which has suddenly stopped working. The wife accidentally unplugged it while vacuuming :rolleyes::rolleyes:, then tried plugging it back in and nothing.

I've checked with a multimeter and the psu is pushing out the correct current 48v, I've opened up the box to disconnect the HDD etc but still can't get any life from it. It's been working solid for 18 months and there's never been a problem even through power cuts.

is there a point on the board I can test or any other options than purchase a new box :(

Any help appreciated. thanks
 
How are you trying to connect to it - web GUI or VGA/HDMI interface?

lee_evo said:
is there a point on the board I can test
Click to expand...
Check for the +5v and +12v on the HDD power connector, and the red LED on the board.
Does the router/switch port show a link detect LED?
Do the NVR PoE ports show any LEDs for the connected cameras?

If yes to these tests, does SADP find the NVR? SADP Tool
If the NVR is active, SADP will find it even if the IP address is no longer on your LAN range.
 
Thanks for the reply Alastair , there is no power, no visible signs of life.

Nothing on the hdd +5v and trace voltage on the +12v
Don't know where to locate the led on the board as nothing is illuminated.
None of the NVR PoE ports are lit

Like I said it was only Unplugged from the power socket
 
Maybe check the 48v when the power supply is connected to the NVR and the NVR is turned on. You can do this on the on/off switch on the back panel
 
Just to update anyone who might have the same problem,

I replaced the 100v 47uf capacitor and my 7604 NVR is back up and running. I didn't have an RST meter to properly test it but after desoldering the old cap it appeared to be in good condition and there was nothing a standard multimeter could detect fault with.

In summary if you don't have an RST meter to test caps, just replace them. this fix cost me £1.06 :)
 
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Hi,

I’m having similar issues like yours, my NVR cam recorder is not starting up. Please find attached picture. Can you please advise what should I do. I read your comments but I’m not electrical guy don’t know what to buy and how to solder, any suggestions?

thanks
Hari
 

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alastairstevenson said:
Does is emit a beep after being powered on?
Does SADP find the device?
Does the link detect LED on the switch / router port it's connected to light up?
Click to expand...
thanks for your response, didn’t know what happened I just tried rebooting multiple times and it started working, no clue how that worked. Anyway it’s working now saves me going through warranty hassle.

cheers
Hari
 
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lee_evo said:
Just to update anyone who might have the same problem,

I replaced the 100v 47uf capacitor and my 7604 NVR is back up and running. I didn't have an RST meter to properly test it but after desoldering the old cap it appeared to be in good condition and there was nothing a standard multimeter could detect fault with.

In summary if you don't have an RST meter to test caps, just replace them. this fix cost me £1.06 :)
Click to expand...
Hi where about is the 47uf capacitor on the board please picture be good I have same problem
 
ausman1 said:
Hi where about is the 47uf
Click to expand...

Most commonly after PS entrance its followed by those capacitors. So follow where your PS jack is and it should be slightly bellow it at 80% of chips. They are round and bigger than rest of the elements on board.
They are big enough you can read values of them.
 
trempa92 said:
Most commonly after PS entrance its followed by those capacitors. So follow where your PS jack is and it should be slightly bellow it at 80% of chips. They are round and bigger than rest of the elements on board.
They are big enough you can read values of them.
Click to expand...
Hey do you have a photo?? Thanks
 
100V are bigger capacitors usually the round ones, and can vary from board to board, doesnt necesarilly always needs to be 47nF
Mostly placed after the PS entranced slightly bellow.

Sign of bad capacitor is usually visually visible. They look like a balloon on top ready to pop off.

Hence a lot of different models, could have different capacitor values.

Make a screenshot of your board and ill point you to capacitor you should check at if its capacitor at all
 
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