Recent content by Simon_Carr

Aah, I used to love my old G4 iBook, and was heartbroken when it finally failed... it had a long and very hard life accompanying me to the tops of numerous Icelandic glaciers to download data from some weather stations... The Macbook I replaced it with has never quite been the same, and although...

Just a little bump on this, as no-one has posted on this one for a while. I use an eMac G4 usb 2 for work on a regular basis, and I keep a G4 (800 mhz) iMac as my main music system at home (with a Harman Kardon Jellyfish, of course!). I prefer the richness of the excellent CRT on the eMac...

Thanks for the suggestions, but it was definitely a problem with the keyboard... I've tested the system again since my last post, and my observation about the same fault happening with a different keyboard hasn't been repeated, and the Centris has been shutting down just fine, and staying shut...

Sorry for the late response but I do have a copy of Mathematica installed on one of my hard drives, but I don't know how good or complete it is. It actually came with the Centris when I bought it (along with early MATLAB, and a few other scientific data analysis packages), but since these...

It is a Centris 650, with a pile of other stuff tucked into it... I've been doing a few tests, having stripped the whole thing down, checked the main circuit board (everything looks fine, but I gave it a clean anyway) and no peculiar sounds or smells when it powers up.  HOWEVER, I realised...

Gave it a try, but no change....

Thanks for the suggestion, i'll give it a try, but I recapped the whole thing last August, and it has a new PRAm battery in it...

Hello, back again now that the autumn/winter has returned and I've put down my bike and picked up my Centris again... Bit of an odd question here, but I'm a bit foxed... My Centris starts up okay, but when I come to shut it down again, it does that just fine, but then instantly restarts. I've...

Nope! Still getting problems with the CD-Rom drive connected.... The Centris starts up okay, and then can open up software (in this case the Apple Personal Diagnostics tool), but then it seems to hang. If I try to Force Quit, the system software just hangs, although  Command-Alt-Esc still opens...

Thanks for that information, Macdrone; it looks like I may have found an issue, as my CD-Rom drive had jumpers for all 3 SCSI ID positions (0,1,2). I have just removed the jumpers from 0 and 1, and the Centris seems to have booted up okay so far. I still need to check that everything is working...

I think there is something not right with the cd-rom... I removed the SCSI but kept it powered, and out popped the caddy.... Having thought I had got my Centris back up and fine, when I reconnected the CD rom drive, it all went pear shaped again! Back to having a ? Floppy disk warning on...

Okay, my Centris is back up and running, but I'm continuing to have problems with the CD drive in the system. It is an original CD drive with Caddy (I think it was made by Sony), and when I started having problems with the Centris, I inserted a System 7.5.3 CD in a caddy into the drive. To cut a...

SOLVED! It turns out there were a couple of separate things that needed sorting out... The installation of Mathematica messed up the Desktop File on the Mac SSD (My SCSI2SD), which I believe is stored in the NVRAM, so no matter how many times I zapped the PRAM (which I did many times), was...

Thanks for the responses, although sadly I have already tried both of these suggestions with no joy. The SCSI2SD works fine, as I checked it using my Mac Classic, just switching the microSD cards over as System 7.5.3 runs dreadfully on the classic. No problems with the hardware or firmware...

Hello Again, Having got my maxxed-out Centris back up and running a couple of months ago, I've suddenly hit a problem. I was installing Mathematica on the Centris a few weeks back, when suddenly it all went awry; I don't think it was anything to do with the installation of Mathematica, but...