Hard Drive Technologies

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seagate hard disk not detected. Does it spin?

January 13, 2017 Jon 24 Comments

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seagate hard disk not detected. Does it spin? (what to do if you fried your drive by plugging in wrong power supply)

If your seagate hard disk not detected, first of all, power it on and listen to it with your ear right next to it. Does it spin?

If not, then it would be for one of the 3 reasons. Seized motor, unparked heads, or dead PCB (printed circuit board). There are also things like dead preamp, but on most brands of drives it would not prevent the spin up process.

I will begin with explaining what seized motor is. Seized motor on the hard drive is fairly common issue that you would find on Seagate hard drive generations 7200.8 7200.9 7200.10 7200.11 7200.12, as well as some hitachi/IBM 2.5” hard drives.
Seized motor would upon start up process with create a faint buzzing, and in some cases beeping sound. I would highly suggest that you seek professional help at this point. This is one of the most difficult tasks to perform on the hard drive, and without necessary equipment you will kill your hard drive in attempt to recover it.

However, these sounds are identical to the ones that the sound would make when heads are not parked properly. All modern hard drives offer touchless heads technology, meaning that the heads are never suppose to come in contact with the disk surface. In the past 3.5” hard drives used to park heads closer towards the center of the drive, and they would land right onto the platter surface that had air pockets to prevent sticking. That technology slowly started to get outdated and less reliable than touchless, so now hard drives park heads on the external parking ramp. Touchless technology offers more durability for the heads when the drive is off power. If it is dropped external parking ramp, that suspends heads in the air, is much better option than having heads sit on the actual disk surface. (this section is best to be read on our blog page here because I have pictures explaining the difference)

Unlike 2 issues above, dead PCB, will turn your drive completely silent. PCB failure would usually be caused by power surges, or plugging in a wrong external hard drive power supply. Dead PCB can be either replaced, or repaired on component level. Luckily, TVS Diodes would protect most hard drives PCBs for mishaps like this, so they need to be tested first. A transient-voltage-suppression (TVS) diode or thyrector is an electronic component used to protect electronics from voltage spikes induced on connected wires. Multimeter with continuity test option will quickly determine if you have a damaged diode or not. Ideally, if you detect the damaged diode it would need to be replaced with an identical one, but in our case since I just needed to recover the data from this external hard drive. After the failed diode was removed, client’s drive began to spin and get detected by our imaging equipment.

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This is an actual data recovery case on a 3TB Seagate hard drive that was dropped. It did not end up with a seized spindle, like most of them do, instead the heads slammed into the platters and were completely wrecked. Hard drive repair is challenging enough, but this drive was being extra difficult to work with.
Video Rating: / 5

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  1. HelmetVanga
    January 13, 2017 - 12:22 pm

    Awareness to the ma***s, and those who read Maximum PC , minimum BS I always wondered if that means bull $%!t or Bachelor of Science. Anyway, in their editions they have a segment called Tech Tragedies and Triumphs. Is it possible that Hard Disk Drives are obsolete and are dying slowly? SSD or solid State Drive non mechanical is making this video irrelevant. I love HDD and I will always love them, I have like 4 brand spanking new HDDs for the forciable future if my builds fail. However, resistance if futile you will be assimilated and absorbed by technology. I am inclined to install both in my next build, a HDD for my Windows Operating System and SSD to store mission critical data, this way if my HDD dies, I can always reinstall Windows and software.

  2. Rubicon2000
    January 13, 2017 - 1:15 pm

    H**lo! It is necessary to repair the hard drive PCB, with this card drive will not start. Where to start repair, what do you say?
    What I did. Checked suppressor – they are good, I changed the charge on obviously working and then the disc spins. What do more? Thank you in advance.

  3. deaamir
    January 13, 2017 - 1:45 pm

    Thanks for the video, it organized and elaborative.
    I have a question tho, why didn't you replace the diode you removed ?

  4. Kato Rand
    January 13, 2017 - 2:37 pm

    Hey My Good Man, I can't thank you enough for this Video. I am a Photographer/Videographer and also host my and my wife's Websites. I do keep a majority of my Photos/Videos on another HDD as backup but a lot of others stuff that I keep on this 3TB Barracuda Seagate Drive and the power for the dock stopped working after transferring it during a hurricane. After replacing the dock, the drive would turn on but not connect to the computer. I was going to replace the PCB board but wanted a way to test it before doing so. I was able to use this video with every step and that same diode was my problem. What I am wondering, however is how long will this HDD work without that Diode? Should I end up buying another PCB board to be safe?

  5. Mega Videolar
    January 13, 2017 - 2:49 pm

    666 Illuminati :D

  6. renz osianas
    January 13, 2017 - 3:38 pm

    i have a dead hard drive, and i was hoping to recover the files(mainly photos,videos,and some backup messages). I'm no professional and i fear that i might damage the data, right now i seek professional help. i just want to know if you accept orders outside your country(btw im from philippines). please reply..thanks in advanced.

  7. Alcee Janis Abella
    January 13, 2017 - 4:24 pm

    i have a problem of my computer i dont know how to fix it. its always show starting windows after my power supply was dead and i replaced it.

  8. Mathijs Groothuis
    January 13, 2017 - 4:57 pm

    What software do you use?

  9. 21BakDoor21
    January 13, 2017 - 5:44 pm

    If you replace the board on the back, can you just buy a board and screw it back to it and it will work like the original?
    My drive spins fine with no noise but the bios sometimes detects but sometimes dont but will never show in Windows.
    I got the drive to attempt to load windows ONCE but never again so whats the chances that its the board/sata plug?

    Whats the chances that it will fix the problem?

  10. hopopotamus
    January 13, 2017 - 6:22 pm

    Great video! Do you mind sharing what tools do you use to remove the diode? I have a same exact drive ( actually 3 of them! ) and they all died on me at the same time!

  11. JGAN96
    January 13, 2017 - 7:18 pm

    What software are you using to turn heads on and off?

  12. Paul Archer
    January 13, 2017 - 8:03 pm

    Hi, I have this problem with a Seagate ST2000DM001 – I got the same short on one of the two Diodes. I removed the diode which had shorted, but it still indicates a short across the pads once removed – and the drive still will not spin. HELP!!

  13. RIB B
    January 13, 2017 - 8:50 pm

    Scrub a copper penny with a pencil eraser, then look at the tarnish a week or month later. Also touching the cleaned contact with oily fingers will cause contact problems later. Maybe good for return repair later, easy scrub head preamp contacts again to fix until next return..

  14. Odd 1
    January 13, 2017 - 9:35 pm

    ive got a 1TB Toshiba external hard drive i dropped it (in its case) on my desk into a jug of about 2&1/2 inches of water for no less then a couple seconds as i was quick to pull it out but it was quite a bang as it hit the surface. then when i next tried it it was making a clicking noise, i sent it to a company called fields-data but unfortunately later learned it was a scam company i desperatley need all my data back as its very important for work reasons, i dropped it back in july (2016) but need it back ASAP ive tried the hard drive recently and it still lights up when i plug it in but now theres no clicking noise what would best suggest i do?! thanks

  15. niceguy60
    January 13, 2017 - 10:33 pm

    It is extremely sad that a good drive must die in order to recover the faulty one, really really sad.
    I definitely don't have the environment or parts for this kind of recovering due to hardware which is why I can only recover drive on the verge of hardware failure or a software failure/accidental erasers.

  16. starwarsfanforlife
    January 13, 2017 - 11:52 pm

    I have an issue where the Seagate Central unit won't power up at all. It has not been dropped or damaged in any way it simply lost power. What would be the best way to recover the data from the drive so I can transfer it to another drive? Is there a kit I can plug it into to access the data?

  17. Glen Copeland
    January 13, 2017 - 11:58 pm

    I wanted to commend you all on a great instructional video as to what goes into data recovery. Your methods seem pure and your intentions and resulting costs are true to your trade and expertise. I wanted to ask when shipping a drive through standard services whether it be in for recovery or just normal day-in/day-out transport, what steps for protection do you recommend? When it comes to storing a hard drive archive (digital picture images) do you recommend any special care such as spinning up the hardware quarterly of semi-annually? Do you recommend one drive over another for quality and serviceability in data recovery or are they all about the same? Thanks for the great video!

  18. David Cairns
    January 14, 2017 - 12:52 am

    Roughly how long would a recovery take. I have my HDD at company and its been 6 weeks now and I wonder if they are avoiding to continue working on it hoping that I take it back.

  19. Hem Sahu
    January 14, 2017 - 1:25 am

    Sir can you please help me my hard drive platter is not rotating.

  20. dannypal123
    January 14, 2017 - 1:53 am

    Fascinating! Truly so! I don't know how I chanced upon your doc*mentary, but it turns out that I myself have a faulty 3TB Seagate that was part of a RAID pair. It has failed physically, with lots of clicking, while the second of the pair seems unassignable in Windows Windows 10. While I'm still hoping to solve the latter problem, I had considered trying to make my own clean chamber, as there are many years worth of data on these drives. I wonder, though, how confident you are of the purity of your air sprays? Secondly, would it not be possible to remove the platters and rinse them in highly purified neutral H2O to remove any contaminants? I'd appreciate your comments, and thank you for this very informative contribution. –Daniel Palomo

  21. Lionstar
    January 14, 2017 - 2:06 am

    what softwhere are u useing?

  22. davida1hiwaaynet
    January 14, 2017 - 2:07 am

    Thanks for sharing – you have amazing patience!

  23. agu monkey
    January 14, 2017 - 2:19 am

    Reminds me I have an "old" WD 200GB (the first 200GB to market IIRC) with a defect, the usual clicking locked head. I guess it's a controler bug .. I wonder how easy it is to fix or swap.

  24. Richo5566
    January 14, 2017 - 2:44 am

    Enterprise grade drives are built to be more durable than consumer grade drives, not from drops but from daily use. Do you get many of these drives sent in?

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