[Coco] Re: FD-502 controller problem

[Charlie]

Gene and Phil, Thank you for the replies!

It is not a cable / drive problem as switching to my Disto SC II everything
works fine.
It has to be something specific with the 502 controller.

Charlie

"Gene Heskett" <gene.heskett at verizon.net> wrote
in message news:446DC445.9000005 at verizon.net...
> Charlie wrote:
> > Hello CoCo fans!
> >
> > I have a FD-502 disk controller that is giving me a bit of trouble. A
DSKINI
> > on drive 0 gives an IO error
> > when the "clicking" sound from the drive steps up to a faster rate. (I
hope
> > I explained that right.) DSKINI on
> > drive 1 works just fine. Otherwise the controller seems to work fine for
> > loading games and apps.
> >
> I think the more likely problem is a lack of lubrication of the drives
> head slider mechanism.  A half a drop of 3in1 on the slider rods can do
> wonders there.  Also, if that drive has the spiral screw drive, with a
> smallish motor on the back of the drive turning that screw directly,
> (newer drives only, say made since 1991 or so) the threads of the screw
> can pack full of dirt and old dried grease over the time periods these
> drives have been around.  That will take something like a toothbrush and
> solvents to clean that up, and a drop of oil or light grease when its
> all cleaned up.
>
> > I opened the controller and cleaned all the contacts. I can see that
some of
> > the contacts have the tin worn off and
> > are looking the color of copper and not silver. Should I re-tin these
with
> > solder?
>
> Not really, as long as they're clean.  A very gentle scrubbing to
> brighten up the copper will leave a better connection than the tin oxide
> would be in 3 months if you re-tined them.
>
> > Besides the worn contacts would anyone else know what could be wrong
with
> > the controller?
> >
>
>
> -- 
> Cheers, Gene
>
>
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