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From: mason@furilo.dec.com (Explaining is not understanding)
Newsgroups: comp.sys.mac
Subject: Still sick Mac
Message-ID: <10129@decwrl.DEC.COM>
Date: Sun, 31-May-87 11:04:14 EDT
Article-I.D.: decwrl.10129
Posted: Sun May 31 11:04:14 1987
Date-Received: Tue, 2-Jun-87 01:49:05 EDT
Sender: daemon@decwrl.DEC.COM
Organization: Digital Equipment Corporation
Lines: 18

HELP!  I now have: 512Ke with 2MB MacMemory upgrade and MacBottom 20 serial
HD.  The upgrade was a logic board swap.  The new(?) board has a long diagonal
jumper on the underside (interesting?).

Firing it up with all SW the same (5.5/4.1) worked the first time, but on
second startup, it couldn't find the HD.  That was a repeatable sequence
if I removed the battery for a while and tried again.  In addition, when
it *did* work, HFS Backup failed after a few disks with 800K diskette errors
(not bad disks in fact).  I switched to 5.3/3.2 and tried again.  Seemed
OK, but still got strange 800K errors.  Back to 5.5/4.1, and I got random
800K drive errors (didn't recognize that it had a disk inserted, etc.) until
it finally gave me the machine-gun sounds and snowy screen and died.  Memory
tests show OK, and Finder sees 2048K.

Any ideas?  This is becoming quite a trip.

Thanks,
Gary