RD54 Stopped Spinning

Robert Jarratt robert.jarratt at ntlworld.com
Sat Apr 4 00:40:46 CDT 2015

> -----Original Message-----
> From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Paul Koning
> Sent: 03 April 2015 18:13
> To: General Discussion: On-Topic and Off-Topic Posts
> Subject: Re: RD54 Stopped Spinning
> > On Apr 3, 2015, at 1:06 PM, Robert Jarratt <robert.jarratt at ntlworld.com>
> wrote:
> >
> > ...
> > Interestingly at one point it started working again. Then after I put it all back
> together again, it stopped working once more. In one case, it seemed to start
> spinning when I changed the disk's orientation (on its side rather than flat),
> almost as if it just needed a mechanical encouragement to get it moving. But
> now, no matter how many times I try, and what different orientations I try, it
> doesn't work. Does any of that help with pointing the finger at all?
> I hate to suggest this, but... head stuck to the platter?
> (I don’t know if drives like this can do that.  I do remember an RF11 that
> stopped spinning because a head crashed, melted, and glued itself to the
> platter solid enough to stop the spindle motor.)

That would not appear consistent with the fact that the disk did spin again (briefly). The hall effect sensors seem to be the most promising thing to check right now. Just reluctant to open up the disk at home.



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