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- Path: sparky!uunet!spool.mu.edu!sol.ctr.columbia.edu!ira.uka.de!smurf.sub.org!news
- From: urlichs@smurf.sub.org (Matthias Urlichs)
- Newsgroups: comp.sys.mac.hardware
- Subject: Re: IIsi logic board dead
- Date: 11 Sep 1992 13:30:51 +0200
- Organization: University of Karlsruhe, FRG
- Lines: 34
- Message-ID: <18q01bINNcfn@smurf.smurf.sub.org>
- References: <1992Sep9.214110.16645@cs.aukuni.ac.nz>
- NNTP-Posting-Host: 127.0.0.1
-
- In comp.sys.mac.hardware, article <1992Sep9.214110.16645@cs.aukuni.ac.nz>,
- David Gladstone <D_Gladstone@cs.aukuni.ac.nz> writes:
- >
- > Hello everyone, I've got a real expensive problem.
- > I recently (3 months ago) bought a 2nd hand IIsi, and it worked fine,
- > until
- > it started spontaneously starting up of it's own accord! The first time
- > this happened was at 2:30 in the morning - scary to see your Mac alive and
- > kicking after you shut it down!
- > After this first happened, it would not turn off (!), i.e. select 'Shut
- > Down',
- > it momentarily blinks and restarts. So I had to resort to turning the
- > power on and off at the wall to turn the Mac on and off (the switch on
- > the
- > back was _not_ jammed).
- >
- > This was fine, except recently I went to turn it on and...
- >
- > Nothing.
- >
- The last time this came up, it turned out that the power-on line got shorted
- to ground within the keyboard due to humidity problems.
-
- Try either to use the power button to start your Mac, or disconnect the
- keyboard, wait a minute, then plug it back in and press the power button.
-
- If that doesn't help, there's not much you can do without a schematic
- of the motherboard, and these seem to be difficult to get...
-
- --
- Don't use no double negatives.
- --
- Matthias Urlichs -- urlichs@smurf.sub.org -- urlichs@smurf.ira.uka.de /(o\
- Humboldtstrasse 7 -- 7500 Karlsruhe 1 -- Germany -- +49-721-9612521 \o)/
-