freak@ihlpa.UUCP (Malloy) (04/30/86)
HELP!!!! HELP!!!! HELP!!!! HELP!!!! HELP!!!! I have a 10 Mb CMI hard disk on my PC, mounted in an external cabinet. The HD never goes "out of service", but it makes a strange sound. Shortly after power up and then every once in a while after that, there is a very strange whinning sound. It has never interfered with the data on it, but I worry that there is something wrong. Can something be oiled or what? Please send mail, I will post a summary. Clancy Malloy (..!ihnp4!ixlpe!freak)
jons@islenet.UUCP (Jonathan Spangler) (05/06/86)
Clancy asked about hard disk noise on an external 10 Mb CMI hard
disk. We too have had problems with 20 Mb MicroScience drives
and an occasional Seagate.
The drives in all cases seemed to be running perfectly except for making
rather irritating whinning noises. I oiled the MicroScience as it is not
enclosed on the bottom. Well, that worked for about a week and then back
to the same old whine. We finally replaced it with a Seagate.
Aloha,
--
Jonathan Spangler
{ihnp4,vortex,dual}!islenet!jons
"On Thursday, the world came to an end."grr@cbmvax.cbm.UUCP (George Robbins) (05/08/86)
In article <2413@islenet.UUCP> jons@islenet.UUCP (Jonathan Spangler) writes: >Clancy asked about hard disk noise on an external 10 Mb CMI hard >disk. We too have had problems with 20 Mb MicroScience drives >and an occasional Seagate. > >The drives in all cases seemed to be running perfectly except for making >rather irritating whinning noises. I oiled the MicroScience as it is not >enclosed on the bottom. Well, that worked for about a week and then back >to the same old whine. We finally replaced it with a Seagate. > >Jonathan Spangler {ihnp4,vortex,dual}!islenet!jons For further information, many hard drives have a grounding contact on some kind of spring arrangement, which rubs against the bottom of the motor shaft. Often these things wear such that they make irritating squeaking, squealing or screeching noises, either constantly or intermittantly. Sometime you can solve the problem by bending the spring tab slightly to increase or decrease the pressure, by putting a tiny amount of grease on the contact button (see you desk drawer slide) or by sticking a little electrical tape along the spring to dampen resonances. BE CAREFUL! You could cure the noise, but screw up a drive that will cost you several hundred dollars to replace. Know your limits... -- George Robbins - now working with, uucp: {ihnp4|seismo|caip}!cbmvax!grr but no way officially representing arpa: cbmvax!grr@seismo.css.GOV Commodore, Engineering Department fone: 215-431-9255 (only by moonlite)
jlw@ariel.UUCP (J.WOOD) (05/18/86)
> > > >The drives in all cases seemed to be running perfectly except for making > >rather irritating whinning noises. > > For further information, many hard drives have a grounding contact on some > kind of spring arrangement, which rubs against the bottom of the motor shaft. > Often these things wear such that they make irritating squeaking, squealing > or screeching noises, either constantly or intermittantly. > > Sometime you can solve the problem by bending the spring tab slightly to > increase or decrease the pressure, by putting a tiny amount of grease on > the contact button (see you desk drawer slide) or by sticking a little > electrical tape along the spring to dampen resonances. > Like the above posters I had an irritating screech (more than a whine) coming from the 20MB Miniscribe in my UNIX PC after 7.5 months of continuous operation. I keep my PC on and booted 100% of the time. After reading the above postings I thought that I could just do some of the pallitives mentioned. In particular I thought I could use some Gunslick, a conductive graphite based grease from Outers. So I took the drive out and much to my surprise the whole tab had worn off and disintigrated. The story has a happy ending, however, I had a spare 20 MB Miniscribe. Right now I'm looking for the newest hot ticket in half-height, ST506, 5 1/4" drives. I've heard good things about the Tandon 740 a 30msec, 40MB drive. Think I'll get a few. Joseph L. Wood, III AT&T Information Systems Laboratories, Middletown (201) 957-5475 <ariel!>titania!jlw
plw@panda.UUCP (Pete Williamson) (05/20/86)
>>We too have had problems with 20 Mb MicroScience drives >>and an occasional Seagate. >> >>The drives in all cases seemed to be running perfectly except for making >>rather irritating whinning noises. I oiled the MicroScience as it is not >>enclosed on the bottom. Well, that worked for about a week and then back >>to the same old whine. We finally replaced it with a Seagate. >> I have a 20 Mb MicroScience drive that works perfectly but occassionally produces an irritating, high pitched whinning noise. The culprit in my case is the signal connector on the back of the drive. If I lightly touch it, the noise damps to zero! The connector is fairly loose. I have stuffed some foam material against the assembly (rather than standing there with my hand on it!) and the problem goes away for a few weeks. Every now and then, I have to jiggle the foam a bit. A real pain in the butt! Anybody else seen this or have any tips? -- Pete Williamson "By hook or by crook, we will !!" ... #2
kathy@bakerst.UUCP (Kathy Vincent) (05/26/86)
In article <1147@ariel.UUCP>, jlw@ariel.UUCP (J.WOOD) writes: > spare 20 MB Miniscribe. Hmmm... Not happy to hear about your experience with the Miniscribe, since that's what I've got in my 3B1. > I've heard good things about the Tandon 740 a 30msec, 40MB drive. A comment about Tandons. I have a 6300 as well. Started out with a 10MB Tandon drive that wore out before the warranty expired. The next Tandon drive wore out within the next 9 months. I had a BBS, so my machine ran 24 hours/day, which might have had something to do with it. I finally put in a 20MB Seagate - with a YEAR warranty instead of the 3 month warranty that went with the Tandons. So far so good - after 5 months, it still sounds the same. No screeching, no grinding. At this point, I would not buy another Tandon. -- Kathy Vincent ========================================================== kitty Home at ihnp4! < > !bakerst!kathy wruxi mcnc!ethos!bakerst!kathy AT&T at ihnp4!wruxi!unix
nerd@percival.UUCP (Michael Galassi) (05/28/86)
In article <121@bakerst.UUCP> kathy@bakerst.UUCP (Kathy Vincent) writes: >Hmmm... Not happy to hear about your experience with the >Miniscribe, since that's what I've got in my 3B1. I'll take your experiences as a warning... > >> I've heard good things about the Tandon 740 a 30msec, 40MB drive. Care to give more details? I have an 80 Meg Maxstore and a 40 Meg Micropolis in my machine, they both seem to work like dreams and use the good ol' ST506 (primitive) interface. The Maxstore is not what I would call quiet but that is its natural noise (sounds like a geiger counter), the Micropolis is so silent I can't hear it over the fans in the computer. I strongly recomend either of these brands to anyone in the market for a high quality hard disk. Now for my question, does anyone have some good/bad experiences w/ the WREN series of drives from CDC? Specificaly the WREN II series which acomodates the ST506 standard (they say). If any CDC people are reading this, feel free to reply, I have your multi-color glosies already though, I just need info like prices and reliability figures (real ones that is). -- Michael Galassi, Frye Electronics, Tigard, OR ..!tektronix!reed!percival!nerd
dmimi@ecsvax.UUCP (Miriam Clifford) (05/28/86)
> In article <1147@ariel.UUCP>, jlw@ariel.UUCP (J.WOOD) writes: > > > spare 20 MB Miniscribe. > > Hmmm... Not happy to hear about your experience with the > Miniscribe, since that's what I've got in my 3B1. > > I've had a 20MB Miniscribe for a couple of years now--hasn't missed a beat. I've never had a disk error with it and had very few bad disk sectors in the first place.
randy@chinet.UUCP (randy) (05/29/86)
In article <1620@ecsvax.UUCP> dmimi@ecsvax.UUCP (Miriam Clifford) writes: >I've had a 20MB Miniscribe for a couple of years now--hasn't missed a beat. I have a 15 meg CMI drive in the original CBBS that has been running *continuously* for over 6 years. (except for one power failure) I am afraid to shut it off! It is in a North Star Horizon and the floppy drive with the boot disk is welded shut from dirt and dust. I find that drives last longest if never turned off and on constantly. The only things that seem to go are the bearings, and they give plenty of advanced warning.. -- .. that's the biz, sweetheart... Randy Suess chinet - Public Access UN*X (312) 545 7535 (h) (312) 283 0559 (system) ..!ihnp4!chinet!randy