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A possible fix for a highly unstable G3 or G4 Tower
Authored by: bdog on Sep 07, '05 10:57:59PM

Please don't call this "nonsense"!!!! I hope this hint can help people have a working computer again...

I don't know if it gets 'worn out' exactly or if it suddenly goes flakey. I would think both are possibilities.

The 3 computers I've seen have been in schools. A lot of dust is the only major unwanted environment variable. What they did have in common was a lot of use (I/O on the bus) since 2 of these towers were servers (MacManager/File Server & NetBoot) and one was a movie editing station. So I concluded that the busses got 'worn out', or so it appears, at least.

A software problem is out of the question, since I tried different HDs (so different CLEAN installed systems) and I even tried different IDE cables, removing the SCSI card, testing and swapping RAM, ect.

Good point about dirty power! That very well be the cause. In the last 3 years, 2 schools have been struck by lightning. ;-) (but none of these 3 computers were in those schools)



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A possible fix for a highly unstable G3 or G4 Tower
Authored by: Big Red on Sep 08, '05 10:42:37AM

Well, I was convinced for 4 months that my Smurf was toast. I could boot up from CD, but could not boot up on a drive attached to the primary IDE bus or a drive connected to an IDE66 PCI card, despite what felt like a dozen reinstalls. I thought it was the PCI card, memory, tried to pull everything. I finally detatched everything from the primary bus and booted with the only hard drives connected to the PCI card. It's been working like a dream ever since.

It was a nice excuse to buy a new machine, and now my girlfriend has a nice functional G3 tower for simple computing tasks.



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A possible fix for a highly unstable G3 or G4 Tower
Authored by: RoyalJimP on Sep 08, '05 04:11:52PM

I bought (on ebay) a sawtooth logic board to put in my Smurf.
I also found the only way to get stable operation was to put the IDE hard drives on the secondary slower optical bus. It would not boot for 9.2 to osX on the primary bus. And did silly things. Since switching busses it is very stable, no problems two years now. I've considered a PCI ATA 100/133 card just for the faster transfer speeds, but just haven't sprung yet cause it's been adequat for the use it's getting



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