Just make sure when you torque the drive as mentioned that you rotate it in as 
close to the same axis of rotation as the platter(s) spin as possible, as any 
other direction of torque could cause the head(s) to impact the platter(s) with 
more energy than desirable, especially if the head(s) are positioned over data 
areas.   

Sometimes the actuator will not fully park when the drive is last powered off, 
especially if things are already gummy.  That can leave the heads over area of 
the disk where data or servo information is recorded, potentially causing 
damage that may not be repairable (without opening the sealed area), and likely 
ruining part or all of the data on the drive (if you care about what's on it) 
even if the positioner is "unstuck" by the torque.

I have successfully (at least temporarily) resurrected some old Maxtor XT-1140 
(ST-506) drives using this "twist" technique.   My experience shows that the 
technique only works a few times and then it quits working.  Thus, if you do 
get the drive running and care about the data that is on it, before powering it 
up, get it connected up to a system that you can use to reliably archive the 
content, because once you power it back down, it may get stuck worse than it 
was before.

I have not tried "cooking" the drive as also mentioned.  


    

-----Original Message-----
From: Tom Hunter via cctalk [mailto:[email protected]] 
Sent: Friday, February 23, 2024 6:25 PM
To: General Discussion: On-Topic and Off-Topic Posts <[email protected]>
Cc: Tom Hunter <[email protected]>
Subject: [cctalk] Re: RD54 Maxtor XT-2190 w/one long meep

It may be that the voice coil positioner is stuck due to some hardened grease.
If that is the case, you could try holding the drive in your hand and flick 
your wrist hard several times to try to dislodge a possibly stuck voice coil.
Alternatively you could flick the drive against something soft like your thigh 
or a rubber mat.
Finally you could try to gently heat the drive to about 60 degrees C and then 
immediately before cooling connect it up to exercise the now hopefully loosened 
voice coil mechanism.

On Sat, Feb 24, 2024 at 8:15 AM Jacob Ritorto via cctalk < 
[email protected]> wrote:

> On Fri, 23 Feb 2024 at 19:01, r.stricklin via cctalk < 
> [email protected]>
> wrote:
>
> > voice coil positioner.
>
>
> Yikes, so that's an "open the lid" situation, bear?  Any "how to" 
> advise / docs / anecdotes out there as I begin searching?
>

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