mason@furilo.dec.com (Explaining is not understanding) (05/31/87)
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
ooblick@eddie.MIT.EDU (Mikki Barry) (05/31/87)
In article <10129@decwrl.DEC.COM> mason@furilo.dec.com (Explaining is not understanding) writes: >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?). The problems you described happened to me as well with a MacMemory upgrade. Although the memory itself is fine, you will find that the voltage from the power supply will be continually declining, finally to the point where the "machine gun noises" and blank screen appear. If you take the machine to your local dealer, you will most likely find that the voltage is somewhere below specs. The difference with my problem was that the machine worked fine for 5 months with the upgrade, THEN, all of a sudden, kept flaking out, until it just wouldn't work anymore. The dealer tried changing the power supply, which worked for about a day, then took out the board. Voila, worked fine. They sent the board back under warranty, but I don't know if I want the damn thing back. Mikki Barry ____________________ "I want my goddamn Mac II and I want it NOW!!!"
jdb@mordor.s1.gov (John Bruner) (06/01/87)
I have a 2Mb 512Ke with a 20M MacBottom, and I've been experiencing flaky drive behavior since I started using System 4.1. (I had been using 3.1.1 for ages, quite reliably, but I foolishly decided to tempt fate.) The disc will run for a while, but without warning a couple of words in the middle of memory will be trashed (presumably when they are read from the disc). This also happens with other Macs. The MacBottom drive diagnostic runs without errors. I called PCPC and they told me that my problem lay in version 2.7 of their software. I sent them $15 for the version 2.9 upgrade. I hope to know by late this week or early next week (depending upon the lightning efficiency of the USPS) whether the new software will solve my problems. -- John Bruner (S-1 Project, Lawrence Livermore National Laboratory) jdb@mordor.s1.gov ...!seismo!mordor!jdb (415) 423-4848