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Damaged hard drive

Discussion in 'Electronic Repair' started by buddd, Jul 7, 2007.

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  1. buddd

    buddd Guest


    I have a what I believe to be a physically damaged hard drive with
    data on it. (My guess it is the heads). When I turn the drive on, one
    hears a knocking sound for about 30 seconds and then the drive
    automatically shuts off.

    The data on the drive is not important enough to pay a professional to
    fix it, and software recovery tools won't work.

    I would like to take the opportunity to open and try repairing the
    disk myself (as a learning process).

    Any suggestions / recommendations?


  2. Charles

    Charles Guest

    Yes, just forget about this project and move on to your next project.
  3. Agreed. But if you can find an identical known good controller PDB, swapping
    that might have at least a chance. Going inside is basically killing it.
    It's not a physical problem like a screw fell out!

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  4. Eeyore

    Eeyore Guest

    If the data's unimportant and recovering it isn't your goal, then you could open
    it up to see what's going on.

  5. Meat Plow

    Meat Plow Guest

    Just open it and look inside, it's beyond repair.
  6. Jim

    Jim Guest

    Set up a new Primary HD and then hook your old HD up as a Secondary, you
    might be able to get some of the data off it. After that I'd tear it open.

    I have one that did the same thing, I was going to take mine a part too, but
    I did'nt have the right size bit (tools).

  7. That's where you use the drill press. Once something is garbage, it doesn't
    matter if you damage it, hence drilling out the screws is perfectly viable
    at that point, to get the magnets out.

    You don't actually need a drill press. A hand drill will work, though not
    one of those cordless screwdrivers that get called "drills".

  8. I used to take the platters out and make wind mobiles or chimes out of them.

    I stopped at one before realising it was stupid.

    Yes, I know I should have stopped at NONE, but when you have nothing better
    to do...
  9. James Sweet

    James Sweet Guest

    You have zero chance of fixing it by opening it up, but if you don't care
    about the data you may as well pop it open. They have some pretty insanely
    powerful magnets in them in the head actuator, fun to play with but be
    careful, they can pinch.
  10. Classic case of a hard drive that has lost it servo track and can not
    find track 0. Caused by a bad track Zero, bad head or bad mux chip in
    the hd chamber.

    It's dead, really dead, will not magiaclly ressurect at some future time.

    Got piles of them

  11. bz

    bz Guest

    Actually, best advice is to take it apart and salvage the magnets.
    If you open the case, outside of a clean room, you have just ruined the
    heads and the platters.

    As for the clicking sound, it is the heads trying to find their position.
    Electronic problems are just as likely to cause the clicking as a head

    It has been many years since a technician in the field could replace the
    heads in a hard drive. I did it back in 1982. But those heads were much
    larger, flew higher and unloaded physically from the platter. That meant
    the platter spun up to speed and then the heads would load. A few pieces of
    loose dust got blown off during the spin up.

    Now, the heads STAY on the platter. Everything must be ultra clean or the
    heads will crash before they get to flying speed.

    Then there is the problem of aligning the heads, even if you could replace
    them. In 1981 it took a scope and the right software to put the heads over
    an eccentricly written track that was special for alignment. I have no idea
    how the tiny hall effect heads are aligned.

    Good luck.

    bz 73 de N5BZ k

    please pardon my infinite ignorance, the set-of-things-I-do-not-know is an
    infinite set.

    remove ch100-5 to avoid spam trap
  12. bz

    bz Guest

    (Michael Black) wrote in

    A hefty pair of diagonal cutters will do, too. Use them like a can opener and
    peel the top open. Sometimes they can be used to turn the screws too.


    bz 73 de N5BZ k

    please pardon my infinite ignorance, the set-of-things-I-do-not-know is an
    infinite set.

    remove ch100-5 to avoid spam trap
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