Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!nuchat!jeffn
From: jeffn@nuchat.UUCP (Jeff Noxon)
Newsgroups: comp.sys.apple2
Subject: Apple IIgs Problems
Keywords: runs for awhile and screen goes black, system hangs
Message-ID: <28555@nuchat.UUCP>
Date: 24 Sep 90 21:02:03 GMT
Organization: South Coast Computing Services, Inc. - Houston, Tx
Lines: 60

First, my system description:

ROM 1 IIgs
Apricorn RamPro IIgs 2 megabyte RAM expansion
DMA SCSI card
Quantum 105 meg ProDrive
AE TransWarp GS, 7 MHz, labelled "TWGS1.5 8S"
AE FastMath, labelled "FM 1.0"
AE GS-Power power supply
AE Conserver fan
AppleColor GS display
Two Apple 3.5" Drives
ImageWriter II
Telebit T2500

Problem:

The computer's power light goes on and it usually starts to run fine.  Soon
after the screen will go black and the machine will just STOP everything.

This is the SECOND motherboard to die on me in ONE week.  The second I took
the "new" motherboard home and hooked everything up, the machine worked for
about 3 minutes.  I've tried unplugging all the cards and the same thing
happens.  All the cards work while the machine works (and in fact everything
worked all weekend until last night around 8).  The machine still dies without
any cards, so I started unplugging things.  It dies without a keyboard, with
the monitor cable unplugged, and so forth.  If all I plug in is the keyboard
and nothing else, turn it on, and type in a basic program that beeps
continuously, it stops beeping and the computer locks up after a few
minutes.

In other words, i've traced everything back to the motherboard.

Either 1) the replacement board I got last weekend was a bum or 2) one of
my cards is damaging the thing.

This all began after I got the RamPro and DMA SCSI cards.  These cards are
less than two months old.  I got the TransWarp in December.  The thing
with the monitor going black happened after plugging the FastMath card in
and using it for about 10 minutes.  The card works but it sucks quite a
load of power, so I pulled it out.  It's a review unit loaned to Incider
Magazine.

With my last motherboard, I was having power problems and Ensoniq problems.
The system would do the Unclaimed Sound Interrupt stuff.  I'm not having that
problem when using my Jameco IIe power supply (5A) or my GS-Power (6A).  But
on both motherboards I had the problem of the screen going black and the system
locking up.

Any suggestions or comments would be greatly appreciated, no matter how
bizarre or ridiculous.  I'm totally lost here, and the dealer will start
looking at me strange if I pop in every week for a new motherboard.  I
don't want my Applecare revoked!

Thanks in advance,
Jeff
-- 
Jeff Noxon                      | Stop complaining and do something about
jeffn@nuchat.sccsi.com          | it.  Really!
713/721-6820 (CDT) Houston, TX  |