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Re: MFM Miniscribe HDD does not spin, how to repair??

Cross-posted to 2 groups.

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larry moe 'n curly wrote
> XYLOPHONE wrote

>> I am trying to get my 20MB Miniscribe 3.5" hard drive running again.
>> The problem is that it doesn't spin up anymore when I power it up. I
>> disassembled the drive's PCB, and swapped it with the PCB from a
>> working drive, and the other HD works with both PCBs, so proving the
>> problem is with the spindle motor itself.
>> Looking closer at it, I notice that when I power it up, the platter
>> spins about 1/4 of a revolution, then stops forever, until I power
>> off and on again. Rotating it manually doesn't fix it.
>> What could be the problem? I feel that if I can get the HDD to
>> correctly spin again, I should be able to access the data. This drive
>> is vintage, so I'm doing all efforts to rescue it.

> Does the RedHill.net.au have any info?  HDDguru.com forums are
> dominated by people who do HD repair and data recovery.

> I would try unplugging the cables from that motor and the motor of a
> working drive and compare the resistance readings of their coils.
> However resistance measurements don't always tell everything about
> coils, and for that you need to ring the coil:

>          http://members.ozemail.com.au/~bobpar/k7205.pdf

>          http://repairfaq.org/sam/flytest.htm

> Is it possible to replace the motor without opening the drive?

Nope.

> I have a feeling dust would be a problem if even if the motor can be removed that way.

Its academic because it cant be.

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Thread

MFM Miniscribe HDD does not spin, how to repair?? XYLOPHONE <rhubarbe0@yahoo.com> - 2011-12-02 09:59 -0800
  Re: MFM Miniscribe HDD does not spin, how to repair?? "Percival P. Cassidy" <Nobody@NotMyISP.net> - 2011-12-02 13:43 -0500
    Re: MFM Miniscribe HDD does not spin, how to repair?? Krypsis <krypsis@optusnet.com.au> - 2011-12-03 06:27 +1100
  Re: MFM Miniscribe HDD does not spin, how to repair?? Arno <me@privacy.net> - 2011-12-03 00:59 +0000
    Re: MFM Miniscribe HDD does not spin, how to repair?? "Salam" <salem@dogfucker.com> - 2011-12-03 13:58 +1100
    Re: MFM Miniscribe HDD does not spin, how to repair?? XYLOPHONE <rhubarbe0@yahoo.com> - 2011-12-02 22:44 -0800
      Re: MFM Miniscribe HDD does not spin, how to repair?? Jerry Peters <jerry@example.invalid> - 2011-12-03 22:45 +0000
        Re: MFM Miniscribe HDD does not spin, how to repair?? "Rod Speed" <rod.speed.aaa@gmail.com> - 2011-12-04 13:08 +1100
      Re: MFM Miniscribe HDD does not spin, how to repair?? Franc Zabkar <fzabkar@iinternode.on.net> - 2011-12-04 09:55 +1100
        Re: MFM Miniscribe HDD does not spin, how to repair?? Winniethepooh@100acrewoods.org (GMAN) - 2011-12-04 19:09 +0000
      Re: MFM Miniscribe HDD does not spin, how to repair?? "larry moe 'n curly" <larrymoencurly@my-deja.com> - 2011-12-05 09:25 -0800
        Re: MFM Miniscribe HDD does not spin, how to repair?? Arno <me@privacy.net> - 2011-12-05 19:15 +0000
        Re: MFM Miniscribe HDD does not spin, how to repair?? "Rod Speed" <rod.speed.aaa@gmail.com> - 2011-12-07 04:13 +1100
  Re: MFM Miniscribe HDD does not spin, how to repair?? Franc Zabkar <fzabkar@iinternode.on.net> - 2011-12-09 07:49 +1100

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