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From: richard@islenet.UUCP (Richard Foulk)
Newsgroups: comp.sys.att
Subject: Re: Weird 3b1 fan behavior
Message-ID: <3641@islenet.UUCP>
Date: Sun, 15-Nov-87 21:33:08 EST
Article-I.D.: islenet.3641
Posted: Sun Nov 15 21:33:08 1987
Date-Received: Wed, 18-Nov-87 05:50:31 EST
References: <21740@ucbvax.BERKELEY.EDU> <30@icus.UUCP>
Reply-To: richard@islenet.UUCP (Richard Foulk)
Organization: Islenet Inc.,  Honolulu
Lines: 23

> I have experienced the same symptoms.   The air from the "variable speed"
> fan on my UNIX PC 3B1 is warm... but I haven't had any problems with
> overheating.  (In fact it keeps my room warm :-) )  I know from experience
> that if the fan dies, your machine will follow suit rather quickly.  Those
> chips/power supply heats up real good!  I notice the faster speed only when
> it is real warm.  I guess it was a tradeoff for AT&T -- either two fans
> and lots of noise all the time -- or one variable speed fan and noise only
> part of the time?  

One solution would seem to be to put two fans in instead of one.  But
most importantly to use some good quality A/C fans instead of the junko
D/C type that comes in the machine.  A/C fans are usually quieter and
more durable.

The existing fan is pretty small though, I'm not sure what's available
in that size.




-- 
Richard Foulk		...{dual,vortex,ihnp4}!islenet!richard
Honolulu, Hawaii