Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!hplabs!hpcc05!hpbbn!hpwad!mleiber
From: mleiber@hpwad.HP.COM (#Michael Leiber)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: HD doesn't spin after power on ???
Message-ID: <19860004@hpwad.HP.COM>
Date: 1 Oct 90 16:06:28 GMT
References: <19860002@hpwad.HP.COM>
Organization: Hewlett-Packard Waldbronn, Germany
Lines: 40


Hi, 

Thanks to all who responded. It finally came out that the cause of the
problem must be the so called "stiction", which seems to be well known
for Seagates drives (at least some mentioned it). At least for bunch
of drives, Seagate used a lubricant on the drive spindle which is too
heavy and causes the spindle to sometimes stick at all. The drive
motor then is not strong enough to unstick, so ... that's were you go.
Two responses said that the problem may be related to power supply,
but that's definitely not the problem with my drive.

All responses said that there is no easy way to get around that, but
here's a summary of what was proposed to do:

	1. repeateadly switch the power on/off. Thats what I've done
	   in the past (and what I should have to do in the future too :-();

	2. give the computer a push, sometimes this should help.

	3. try to relubricate the spindle. one recommended to clean the
	   spindle with alcohol and lubricate it with a low viscosity oil.
	   Didn't try this yet, but will do it if things get worser
	   (I don't know if the spindle itself is reachable from outside
	   the housing otherwise, hmmm ... I don't have a clean room 
	   at home)

	4. some simply said that I should by a new drive. That's a fine
	   idea, and I will put my bank account number in the appendix, 
	   so that they can transfer a certain amount of money on that ;->


Again, thanks to all replies,               michael

------------------------------------------------------------------------------
email:    mleiber@hpwadlk
phone:	  Germany 7243 602527
address:  Michael Leiber, Hewlett Packard, Waldbronn Analytic Division,
	  Hewlett Packard Str. 1, 7517 Waldbronn, West Germany
------------------------------------------------------------------------------