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From: planting@rsch.WISC.EDU (W. Harry Plantinga)
Newsgroups: comp.sys.mac
Subject: Re: Mac Hardware Crashes
Message-ID: <3048@rsch.WISC.EDU>
Date: Tue, 9-Dec-86 08:36:01 EST
Article-I.D.: rsch.3048
Posted: Tue Dec  9 08:36:01 1986
Date-Received: Wed, 10-Dec-86 03:37:11 EST
References: <1454@trwrb.UUCP>
Organization: U of Wisconsin CS Dept
Lines: 17

> Question for you Mac hardware gurus.  I had my 512K Mac upgraded first to the
> 512KE and then a month later to the full MacPlus configuration.  
> About every fourth or fifth time I insert a disk into the internal 800K drive,
> the system bombs.  In fact, the bombs occur right after the disk is
> grabbed and seated.  

I had the same problem, and it got worse.  Eventually, *every* disk
insertion caused a crash.  I started getting other crashes, too.  

On a hunch I took the cover off the mac, and I haven't had any crashes
since.  It seems to have been a heat-related problem.  (I wonder if
the culprit is the disk controller chip?  I have a scsi port adapter
(Supermac's) that covers some chips back there.)

Harry Plantinga
planting%colby.wisc.edu
{allegra,seismo,ihnp4,heurikon}!uwvax!planting