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External ADATA HDD Repair

By on April 25, 2016
External ADATA HDD repair










This external ADATA HDD Model Nobility NH03 was brought to me and the complaint was never recognized in any PC.

External ADATA HDD repair

First thing done was to check on the external PSU (Power Supply Unit) of this device with the Digital Multimeter.

check voltage using multimeter

As you can see, the V-OUT was correct, by reading the specifications of the manufacturer in the label.

So now was the time to open the plastic case of this device, it was a difficult and serious task:


The inner HDD brand name was SAMSUNG Model HD154UI with a capacity of 1500.00GB (1.5TB)


The HDD was extracted and tested in a PC and the result was 100% satisfactory; all the partitions were showed in the PC perfectly fine with all the information. So now I had to focus in the PCB of this device.

 circuit board

The PCB was connected with the PSU and when it was turned on by means of the switch; it did not turned on at all (the blue LED that acts as an indicator did never light). The PCB was extracted from the box and analyzed carefully with the DMM (Digital Multimeter).

dmm multimeter

There was no electronic components burnt or damaged at simple sight. The V-IN was measured from the connector to the PCB and there was 12.15v. Now the fuse was tested with the DMM (in continuity position) and it was fine, but when it was tested with voltage, there was no voltage on it (F200). So the culprit was the connector of the V-IN.

vin connector

The contacts of the V-IN were tested and it was not commuting one of the contacts when the jack was introduced on it.


As I did not have the right spare, then I decided to make a jumper by means of a piece of wire.


I continued checking on the device and could realize of a loosen connection in one of its connectors.


The metallic contact was extracted from the connector and soldered carefully.


It was put in its own connector and everything was connected, the device was turned on, look at the result.

external hdd repair

external hdd repairing

This time the unit really turned On perfectly and the disk was loaded perfectly in a PC with all its partitions (F and G in this specific case) and with all the information.


This article was prepared for you by Humberto Rodriguez, one of our ‘Master Authors’ from Cuba

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Note: You may check his previous repair article in the below link:





  1. albert van bemmelen

    April 25, 2016 at 4:40 pm

    Good repair Humberto. Not often that even two connectors fail at the same time but you checked and fixed it.
    Another happy customer. Losing 1.5TB of Data would have been a real disaster for the owner.

    • Humberto

      April 25, 2016 at 8:49 pm

      Thanks Albert, you are right. By the way, some days ago I visited the owner of this device, because he and his wife are friends of mine, and he's still using this unit.

  2. Robert Calk

    April 25, 2016 at 5:36 pm

    Good job, Humberto.

    • Humberto

      April 25, 2016 at 8:52 pm

      Thanks Robert. By the way, I'm trying to visit your country, because my brother who has been living in your country for 18 years has invited me. Let's see if in the USA Embassy of my country they accept me.

      • Robert Calk

        April 26, 2016 at 2:02 pm

        That's great, Humberto. I hope you get to visit your brother and enjoy our country!

      • Harry Diaz

        September 29, 2016 at 11:34 pm

        Hello Mr. Humberto queiro know how opened this case I have an equally 3b if turns blue focus but now that I wanted to use after months I connect but does not recognize the hard drive and try formatting it and everything and can not mount or anything I want do is remove it and connect directly to a PC and try and try other housing drives the problem is how to open the case I do not see any screw.

  3. Parasuraman S

    April 25, 2016 at 9:05 pm

    Very rare feature, indeed! I salute you on your capacity to handle any electronic stuff that comes to you! You are really amazing!

  4. beh

    April 25, 2016 at 9:11 pm

    Humberto : like always you did it and thanks.

  5. Andre Gope

    April 26, 2016 at 5:37 am

    Nice repair article Mr. Humberto. Great Job.

  6. Yogesh Panchal

    April 26, 2016 at 3:19 pm

    Good attempt!

  7. suranga bandara, Suranga Electronics

    April 26, 2016 at 4:36 pm

    hi.. Mr- Humberto,

    Good Work ! The Great trouble shooting you have done.

  8. eduardo

    May 11, 2016 at 2:27 am

    How to open the case ?

  9. JesusH

    September 3, 2016 at 2:06 am

    how to open the case?

  10. Jorge Chavando

    December 29, 2016 at 2:19 am

    Humberto, I need your help, I have the same problem but I have no idea how to open the hard disk case can you help me?

  11. Victor H. López Vivero

    January 20, 2017 at 2:29 am

    Hi Humberto: My NH03 is not Starting so I would like to know:
    How do you open the HDD?
    Could you show us Where the clips are and the right way to release them?

  12. Jesús Gómez

    February 27, 2017 at 3:15 am

    Hello Humberto Rodriguez, i have a similar trouble with my external hard drive. i can't open the black case, i don't know how. can you help me please?

  13. Annie

    March 3, 2017 at 12:42 am

    "So now was the time to open the plastic case of this device, it was a difficult and serious task."
    It was for sure.
    It is almost impossible to open it without any damage.
    It has 3 clips on each side and only top and bottom are accessible. 2 screwdrivers, a hammer and brute force finally opened mine.
    Checked the HDD and it's working fine. Now I need a new case.


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