Experience with Dysan drive tester?
ard at p850ug1.demon.co.uk
Fri Oct 5 17:40:09 CDT 2007
> > There are a number of types of drives used in vintage computers that ar=
> > no longer available, so it makes sense to be able to repair and align
> > them. I just wioh I'd bought a 3" alignment disk (and for that matter a=
> > 8" one) when they were available.
> You imply here that they're not. I don't know, not having looked. I kn=
8" alignment disks _may_ still be available (I've not checked recently
either), but I doubt that 3" (Amstrad, etc) ones are. They were hard to
find when the drives were in common use.
> that with the 3.5" drives, I can buy new ones way cheaper than my time t=
> repair them is worth, if you can even get enough repair info on them to =
My point is that the new, replacement, drives may not be properly
Trying to get servicve manuals for such drives is normally a waste of
effort (althogh I did get the Teac manual for the drive in this PC). But
in general you can fidnd the read amplifier testpoints without a
schematic, and figuring out what to move to do the alignment isn't hard
As regards whether or not it's worth buying the alignment disk, I have
some 3.5" drives that are non-standard (in particular the full-height
Sony 600rpm units) and which can't be replaced by ex-PC-drives. I have to
be able to repair and align those.
> anything useful. Working on the older stuff is another matter entirely=20
I thought this was classiccmp :-). In other words, my first thoughts on
this list are for the 'odler stuff'.
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