21 Sep
2021
21 Sep
'21
1:35 a.m.
I have about a dozen or so 1325,1335, and 1355 drives here, also some
earlier ones (some have the DEC label) RD50, 51,52, and even a few 54s. If
anyone is interested, please contact me off list.
Thanks, Paul
On Mon, Sep 20, 2021 at 1:14 AM Chris Zach via cctalk <cctalk at classiccmp.org>
wrote:
That is what fixed it, hair dryer blowing around the
unit. I stayed away
from the circuit boards and just kept moving to different places. I
thought a head was sticking, but it finally started to move a bit so it
might have been a really gummed bearing. Or #3 head was stuck and
loosened, most of the errors are on that head.
Running it through the MFM tool got all but 200 or so sectors on the
first pass, most errors were on head 3 but tapered off after cyl 500.
Seems like a normal copy of Accent, no special information so it might
not be worth taking the world apart to get it working.
Thanks everyone. Back to
On 9/20/2021 12:17 AM, Jonathan Stone via cctalk wrote:
I had suggested a hair-dryer, as recommended
circa 20 years ago for
drive "stiction" after disuse. It seems that
worked.
On Sunday, September 19, 2021, 08:58:57 PM
PDT, Bill Degnan via
cctalk <cctalk at classiccmp.org> wrote:
I have simply opened and physically moved the disk counter clockwise a
turn, in a clean dust-free place. Or try putting in an oven on warm for
3
minutes a side, all four sides to loosen the
grease. Might sound crazy
but
these have worked for me before
Bill
On Sun, Sep 19, 2021, 10:18 PM Zane Healy via cctalk <
cctalk at
classiccmp.org>
wrote:
> 20+ years ago, I remember people talking about disassembling these to
fix
> the issue. I?ve never tried. Though I have
one or two that might
benefit
> from is. If the CLASSICCMP archives from
?97-2000 are online, I?d
> recommend running a search against them.
>
> Zane
>
>
>
>
>> On Sep 19, 2021, at 3:58 PM, Chris Zach via cctalk <
> cctalk at classiccmp.org> wrote:
>> Ok, so out of the basement came a Micrapolis 1325 (the old Dec RD53
> disk) with what appears to be stuck heads. Rotor tries to move under
power
> but can only take out slack. Will move
backwards a bit.
>> Is this stuck head, and what would be the best way to free it? The
> reason I'm asking is this disk had a SA1000 adapter mounted under it so
I
> am pretty sure it was a PERQ disk. Which
means data may be priceless.
And
of course
it's stuck.
Thoughts?
CZ