30 Dec
2004
30 Dec
'04
4:59 a.m.
I've got someone asking me about a Profile hard drive in a Lisa 2/10. He
says it makes a loud screaming noise when it is running. Maybe bad
bearings?
Anyone seen this with the Profile drives? Any idea if it is fatal? Any
idea if it can be repaired?
Any advise I can pass on would be great.
-chris
<http://www.mythtech.net>
30 Dec
30 Dec
5:16 a.m.
On Thu, 30 Dec 2004, chris wrote:
I've got someone asking me about a Profile hard
drive in a Lisa 2/10. He
says it makes a loud screaming noise when it is running. Maybe bad
bearings?
72 years ago, I was in charge of an early 3Com LAN, with drives in
stacked 'shoeboxes'. I came in one Monday morning to find one of the
drives making this thin 'shrieking' noise.
I of course did a panic shutdown and got the Vendor rolling - turns out
that it was the Absolute Filter on top of the drive case making the same
kind of noise that one makes by blowing across a piece of taut paper. The
tech just pressed down on the aluminum cover at the edge of the filter
'pod' and that fixed it.
I was sure the heads had crashed, but somehow the system was still
running - though I couldn't see how, since it sounded like the heads were
milling the platters into expensive red dust.
Maybe this is what's happening here??
Cheers and Happy NuYeer to all and sundry!
John
5:30 a.m.
On Thu, 2004-12-30 at 14:16 -0500, John Lawson wrote:
On Thu, 30 Dec 2004, chris wrote:
Nice story - first time I've heard that.
Other end of the scale, I've had a drive in a Whitechapel make a noise
like this before and it lasted about ten minutes on the bench before the
heads went crunch.
I've also got a Rodime drive (32MB I think) for a BBC micro that screams
- only the scream comes and goes, plus changes in pitch. Sounds very
like bare metal on metal contact, but the drive ran for long enough to
copy data across to a replacement (and is still running, I just don't
have any call to use it)
Personally I'd back up that Profile drive if there's critical data on it
(if there's a way!) and be looking for a replacement drive... (can
Profiles use anything other than an ST506?)
cheers
Jules
I've got someone asking me about a Profile
hard drive in a Lisa 2/10. He
says it makes a loud screaming noise when it is running. Maybe bad
bearings?
72 years ago, I was in charge of an early 3Com LAN, with drives in
stacked 'shoeboxes'. I came in one Monday morning to find one of the
drives making this thin 'shrieking' noise.
I of course did a panic shutdown and got the Vendor rolling - turns out
that it was the Absolute Filter on top of the drive case making the same
kind of noise that one makes by blowing across a piece of taut paper. The
tech just pressed down on the aluminum cover at the edge of the filter
'pod' and that fixed it.
I was sure the heads had crashed, but somehow the system was still
running - though I couldn't see how, since it sounded like the heads were
milling the platters into expensive red dust.
5:40 a.m.
On Thu, 30 Dec 2004, Jules Richardson wrote:
I've also got a Rodime drive (32MB I think) for a BBC micro that screams
- only the scream comes and goes, plus changes in pitch. Sounds very
like bare metal on metal contact, but the drive ran for long enough to
copy data across to a replacement (and is still running, I just don't
have any call to use it)
This was precisely the symptoms and, if fading memory can reconstruct,
those were Rodimes as well, though I have heard of 'whistling filter'
syndrome on a couple of other occasions - mostly on full-height
multi-platter 5" drives.
And a hearty 'ditto!' on backing-up: ya never know....
Cheers
John
8:25 a.m.
Once upon a time, I was an operator for a ring of Apollo domain
machines. One of them had a
drive that had a static drain spring (a leaf spring that touches the
end of the spindle) that
would take to "singing", a loud shriek. When this would happen, I was
told to take the side off
the apollo machine and ever so gently touch the spring. Worked like a
charm, the spring would
shut up for up to three weeks but it would always get back to it again.
On Dec 30, 2004, at 11:30 AM, Jules Richardson wrote:
On Thu, 2004-12-30 at 14:16 -0500, John Lawson wrote:
On Thu, 30 Dec 2004, chris wrote:
Nice story - first time I've heard that.
Other end of the scale, I've had a drive in a Whitechapel make a noise
like this before and it lasted about ten minutes on the bench before
the
heads went crunch.
I've also got a Rodime drive (32MB I think) for a BBC micro that
screams
- only the scream comes and goes, plus changes in pitch. Sounds very
like bare metal on metal contact, but the drive ran for long enough to
copy data across to a replacement (and is still running, I just don't
have any call to use it)
Personally I'd back up that Profile drive if there's critical data on
it
(if there's a way!) and be looking for a replacement drive... (can
Profiles use anything other than an ST506?)
cheers
Jules
I've got someone asking me about a Profile
hard drive in a Lisa
2/10. He
says it makes a loud screaming noise when it is running. Maybe bad
bearings?
72 years ago, I was in charge of an early 3Com LAN, with drives in
stacked 'shoeboxes'. I came in one Monday morning to find one of the
drives making this thin 'shrieking' noise.
I of course did a panic shutdown and got the Vendor rolling -
turns out
that it was the Absolute Filter on top of the drive case making the
same
kind of noise that one makes by blowing across a piece of taut paper.
The
tech just pressed down on the aluminum cover at the edge of the filter
'pod' and that fixed it.
I was sure the heads had crashed, but somehow the system was still
running - though I couldn't see how, since it sounded like the heads
were
milling the platters into expensive red dust. 
5:34 a.m.
On Thursday 30 December 2004 11:16, John Lawson wrote:
On Thu, 30 Dec 2004, chris wrote:
--
Lyle Bickley
Bickley Consulting West Inc.
http://bickleywest.com
"Black holes are where God is dividing by zero"
I've got someone asking me about a Profile
hard drive in a Lisa 2/10. He
says it makes a loud screaming noise when it is running. Maybe bad
bearings?
72 years ago, I was in charge of an early 3Com LAN, with drives in
stacked 'shoeboxes'. I came in one Monday morning to find one of the
drives making this thin 'shrieking' noise.
I of course did a panic shutdown and got the Vendor rolling - turns out
that it was the Absolute Filter on top of the drive case making the same
kind of noise that one makes by blowing across a piece of taut paper. The
tech just pressed down on the aluminum cover at the edge of the filter
'pod' and that fixed it.
I was sure the heads had crashed, but somehow the system was still
running - though I couldn't see how, since it sounded like the heads were
milling the platters into expensive red dust.
Maybe this is what's happening here??
Cheers and Happy NuYeer to all and sundry!
John
5:35 a.m.
Since 3COM was founded in 1979, I don't think you were working on 3COM 72
years ago ;-)
Lyle
On Thursday 30 December 2004 11:16, John Lawson wrote:
On Thu, 30 Dec 2004, chris wrote:
--
Lyle Bickley
Bickley Consulting West Inc.
http://bickleywest.com
"Black holes are where God is dividing by zero"
I've got someone asking me about a Profile
hard drive in a Lisa 2/10. He
says it makes a loud screaming noise when it is running. Maybe bad
bearings?
72 years ago, I was in charge of an early 3Com LAN, with drives in
stacked 'shoeboxes'. I came in one Monday morning to find one of the
drives making this thin 'shrieking' noise.
I of course did a panic shutdown and got the Vendor rolling - turns out
that it was the Absolute Filter on top of the drive case making the same
kind of noise that one makes by blowing across a piece of taut paper. The
tech just pressed down on the aluminum cover at the edge of the filter
'pod' and that fixed it.
I was sure the heads had crashed, but somehow the system was still
running - though I couldn't see how, since it sounded like the heads were
milling the platters into expensive red dust.
Maybe this is what's happening here??
Cheers and Happy NuYeer to all and sundry!
John 
10:44 a.m.
I've got
someone asking me about a Profile hard drive in a Lisa 2/10. He
says it makes a loud screaming noise when it is running. Maybe bad
bearings?
72 years ago, I was in charge of an early 3Com LAN, with drives in
stacked 'shoeboxes'. I came in one Monday morning to find one of the
drives making this thin 'shrieking' noise.
I of course did a panic shutdown and got the Vendor rolling - turns out
that it was the Absolute Filter on top of the drive case making the same
kind of noise that one makes by blowing across a piece of taut paper. The
tech just pressed down on the aluminum cover at the edge of the filter
'pod' and that fixed it.
I was sure the heads had crashed, but somehow the system was still
running - though I couldn't see how, since it sounded like the heads were
milling the platters into expensive red dust.
Maybe this is what's happening here??
7078
days inactive
7078
days old
7 comments
6 participants
participants (6)
-
ard＠p850ug1.demon.co.uk -
cb＠mythtech.net -
jpl15＠panix.com -
julesrichardsonuk＠yahoo.co.uk -
lbickley＠bickleywest.com -
ron.hudson＠sbcglobal.net