Newsgroups: comp.sys.mac.hardware
Path: utzoo!utgpu!cunews!bnrgate!bwdls61!bnr.ca!bschmidt
From: bschmidt@bnr.ca (Ben Schmidt (BNR))
Subject: Re: Modifying MacII, IIfx soft power switch so Mac powersup after power failure
Message-ID: <1991Feb18.162416.28945@bwdls61.bnr.ca>
Sender: usenet@bwdls61.bnr.ca (Use Net)
Organization: Bell-Northern Research
References: <1991Feb14.230426.8814@bwdls61.bnr.ca>
Date: Mon, 18 Feb 1991 16:24:16 GMT

In article <1991Feb14.230426.8814@bwdls61.bnr.ca> bschmidt@bnr.ca (Ben 
Schmidt (BNR)) writes:
> Apologies if this is a FAQ, but is there a modification that one can 
> perform so that when the power fails on a Mac II or IIfx, it will 
> automatically boot up when the power comes back?  Standard application 
is 
> when the power failure occurs on a Mac II running AppleShare.
> 
> Soldering iron solutions acceptable, as are 3rd-party add-ons 
(PowerKey?). 

Thanks to the people who e-mailed me notes to use a screw driver and
set the power switch to permanently on.

Unfortunately, the Mac II (and apparently even the IIfx) don't have
anything but a square push button. Apparently Apple learned about the
problems caused by this arrangement before they brought out the IIcx
and IIci and improved their power switches to work either as
push-on/push-off or screw-on/screw-off.  Hmmm....I wonder if I could
get a replacement IIci power switch and get it installed on a Mac II?

I even got a suggestion to tape the soft power switch down.  Unfortunately 
that
doesn't work either.  When the power is interrupted and then restored to a 
Mac
II with it's power switch taped down, an internal relay clicks at 1 second 
intervals
but the Mac II doesn't power up, unless the tape is removed and the power 
switch 
button is allowed to pop back out.

Ben Schmidt     Bell-Northern Research, Ltd.   Ph: (613) 763-3906
Information     P.O. Box 3511, Station C       FAX:(613) 763-3283
Technology      Ottawa Canada K1Y 4H7          bschmidt@bnr.ca