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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