B00ze  wrote:
> On 2016-06-25 03:49, frank  wrote:
>
> Vorpal, if I recall, also came with an alignment disk - I used to have
> one. The problem is that you can't copy this disk, because then the disk
> acquires the alignment of the drive that wrote it (but if you copy it on
> a perfect drive then you're good).
>
> This guy had some for sale last year:
> http://www.lemon64.com/forum/viewtopic.php?t=55340

thanks for the informations. I'm reading most of the old repair guide,
so I guess that most of the repairs can be also made with a known good
factory made floppy (and I have a few that still read fine on all
drives). There aren't many shortcuts I think.
Clean the mechanics, check spindle speed and most important: check for
micro slips in the spindle belt if it's a belt driven spindle motor.
Then check head rails and maybe track-step alignment (but hard to be off
in most mechanics I've seen so far) and end-stop of the head movement.
I've had only one electronic failure on these drives, all seems to be
age-related on the mechanics.
Oh, and avoid "pressure to get the job done quickly", ever.

Frank IZ8DWF

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