Fixing "dead" 3.5" platinum 800K drives

Fixing "dead" 3.5" platinum 800K drives

Post by stephen e bugg » Thu, 19 Nov 1998 04:00:00



       FIXING "DEAD" 3.5" 800K PLATINUM DISK DRIVES
       ============================================

I just batted "5-for-5" on repairing a set of platinum 3.5" drives!
Here is advice:

Two worked again just by opening the case and cleaning out the cobwebs,
etc.

One worked again when I transplanted the drive from a scrapped Macintosh
II into the external casing.

One had its internal IDE-20 plug disconnected from the analog board
socket.

The last one took 4-5 hours!   It finally worked when I swapped it into a
different casing.....

Never give up on apparently "dead" Apple hardware!   Long live A2!

Steve Buggie                    Gallup NM

 **=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=**
 ** Stephen Buggie  UNM-Gallup,  200 College Road,      Gallup NM 87301 **

 **               Apple ][ Forever ---- the "trailing edge"!            **
 **=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=**

.

 
 
 

Fixing "dead" 3.5" platinum 800K drives

Post by Rubywan » Thu, 19 Nov 1998 04:00:00


stephen e buggie writes ...

Quote:

>        FIXING "DEAD" 3.5" 800K PLATINUM DISK DRIVES
>        ============================================

> I just batted "5-for-5" on repairing a set of platinum 3.5" drives!
> Here is advice:

> Two worked again just by opening the case and cleaning out the cobwebs,
> etc.

> One worked again when I transplanted the drive from a scrapped Macintosh
> II into the external casing.

> One had its internal IDE-20 plug disconnected from the analog board
> socket.

> The last one took 4-5 hours!   It finally worked when I swapped it into a
> different casing.....

> Never give up on apparently "dead" Apple hardware!   Long live A2!

     For sure. Even a "dead" Slot card has value. When you pull off the
bad IC's, you have a good start for your next project.

Rubywand

 
 
 

Fixing "dead" 3.5" platinum 800K drives

Post by Patrick Schaefe » Thu, 19 Nov 1998 04:00:00



>      For sure. Even a "dead" Slot card has value. When you pull off the
> bad IC's, you have a good start for your next project.

Cut off the slot connector and glue it to a prototyping board. One of
these cards with .1" spaced holes and copper dots or copper strips.
This is the cheapest way to get a pcb that fits into an Apple slot.

Patrick

 
 
 

Fixing "dead" 3.5" platinum 800K drives

Post by Rubywan » Thu, 19 Nov 1998 04:00:00


Patrick Schaefer writes ...


> >      For sure. Even a "dead" Slot card has value. When you pull off the
> > bad IC's, you have a good start for your next project.

> Cut off the slot connector and glue it to a prototyping board. One of
> these cards with .1" spaced holes and copper dots or copper strips.
> This is the cheapest way to get a pcb that fits into an Apple slot.

     Not a bad approach. However; we have piles of computer boards (from
dumpster diving) which have connectors with the correct spacing. I just
slice and trim to 50 contacts and stick onto a coper-clad board (or
prototyping board). Genuine A2 boards usually keep their connectors--
they get repaired and/or modified. (Actually, in terms of time and
bother, your idea of just slicing and pasting on a clean p-board may
make better sense.)

Rubywand

 
 
 

Fixing "dead" 3.5" platinum 800K drives

Post by Frank Carne » Thu, 19 Nov 1998 04:00:00


I saw a cool way to make prototype boards.  It uses perfboard and self
adhesive copper strips.  The perfboard has the perfect spacing for the
pins in the socket (the same as the PC and Apple spacing) and all you do
is apply the strips aligned to the holes.
 
 
 

1. "It's Dead, Jim" or "The Case of the Dead Newsgroup"

        comp.sys.apple seems to be dead enough to call for a vote
for cancellation or going through whatever means necessary to get it
removed.

        Note that I am not personally calling for a vote as I don't
have the foggiest idea of what to do..  I am just bringing the topic
back to the forefront.. as the whole purpose of making comp.sys.apple2
was to remove comp.sys.apple (and the purpose of that was to stop
b0z0s from posting Mac-specific questions).
--
  _    __       __           __       _     /-------------------------------\


Computer engineering student seeking a job. \-------------------------------/

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