Help! NVR Power Issue

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Saviour Grech

Hi all,

 

I am going to be short and to the point.

Recently my NVR developed a fatal fault after a power outage where upon connecting any one of the PoE cameras the unit shuts down abruptly. The problem seems to be emanating from a faulty crystal (aka TF Oscillator / Tuning Fork Oscillator) which exploded (see similar pic for ease of reference).

Can anyone be gentile enough as to let me know the crystal value as it seems not printed on the component or on the PCB.

Thanks.

 

-1

Comments

12 comments

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  • Saviour Grech

    btw the unit is an Annke N44SU model.

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  • Sebastian Michaelis

    I have a variation on this model (N44su) and have what looks to be the same component broken.

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  • Sebastian Michaelis

    ...cont

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  • Sebastian Michaelis

    cont 2...

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  • Support Team

    Hi, friend,

    Welcome to Annke Community!

    For this problem, please submit a request on the help center to the technical support team. The technical support agent will help you as soon as possible.

    Here is the link of the help center: https://help.annke.com/hc/en-us/

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  • Saviour Grech
    • Edited

    Dear all,

    Good News! Problem solved!!!

    The mentioned component is not faulty even though it appears to be as if exploded. That blob on the tuning fork crystal is some kind of shellac to keep the component stable in place.

    I have two other CCTV units and saw that all of them have this weird shellac on this component. So, I said to myself that the fault must be definitely somewhere else. In fact, the problem was with its power supply. I swapped it with one of the other working units and boom, everything was working fine.

    If you intend to buy a new power supply, the best bet is to have it at least 6 Amps and not 5 Amps as when the unit is loaded with all the 4 PoE cameras (which depend on its PSU) and the Hard disk, the unit might be very very close to overloading. And don't forget to put an anti-surge plug to protect the unit as this will protect the PSU + Unit from any spikes in case of recovery from any power outages.

    I hope this solution will be useful to anyone that suspects that this component is faulty. It's a false alert!

     

    Sav.

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  • Support Team

    Hi, Saviour,

    Glad to hear that the problem is solved.

    We highly appreciate your sharing with the troubleshooting process. It is good for other users to do the troubleshooting for their problems with the security system.

     

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  • Sebastian Michaelis

    Thank you for your reply,

    I had a look at the power supply unit (transformer) and it had a faulty connection. There was insufficiant power going to the DVR unit causing it to fail. I have replaced the power unit and it works correctly now.

     

    Thank you

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  • Saviour Grech

    Hi Sabastian,

     

    That's interesting. Well done.

     

    At least yours is now rocking again ;)

     

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  • Support Team

    @Sebastian Michaelis,

    Glad to hear that the root cause of the problem has been found, and the problem is solved. Cheer up!

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  • Saviour Grech
    • Edited

    btw Thanks Kate 👍

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  • Support Team

    @Saviour Grech,

    You're always welcome! ^_^

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