---------- Original message ---------- Subject: Re: Digital Audio doesn't recognize Sonnet ST / processor temperature Date: Mittwoch 25 August 2010N From: Geke <gevangaste...@googlemail.com> To: "G-Group" <g3-5-list@googlegroups.com>
> I still want to ask Sonnet about it, just to understand what’s > happening when such an ST seems to run normally except that it runs > very hot very quickly. Sounds like a thermal problem to me. > I mean, what could be broken, and maybe, could that be fixed? I recieved a used G4 AGP with an OWC 1.4 GHz Mercury Extreme G4 upgrade in it. It worked fine without crashes and the overall system (the Mac with all its parts) worked without errors. Thus, my situation is different. Anyway, I removed the heatsink+fan and replaced the thermal paste with a new one (I used Arctic Silver 5). That was at least one year ago. Thermal paste theory: http://www.techpowerup.com/articles/overclocking/134 Arctic Silver 5: http://www.arcticsilver.com/as5.htm (you may use *any* modern thermal paste for that purpose – no intend to advertise…) The important point I'm finally getting to is: when I removed the heatsink I noticed some dust here and there. I cleaned it all and with the new thermal paste it should be ready to serve for another 10 years or so with ease. This may be your problem. If not, you're having serious hardware problems or your firmware or your settings of the CPU make it run at a far too high speed. If I'd set the multiplier of my OWC 1.4 Mercury Extreme G4 to its maximum I can reach as high as 2.13 GHz on a system with a 133 MHz system bus (DA, QS, QS2002). Then, I guess, it would overheat very quickly too – just like you described. Maybe you give it another chance and get some more information on the Sonnet upgrade kit. You see, the OWC upgrade uses jumpers to set the correct speed. See: http://eshop.macsales.com/Tech/Load_Page.cfm?page=FAQ/extreme/extremesettings.html I've read that Sonnet on the other hand has some kind of auto detection. Don't know if there is a way to force a specific multiplier on it, so it will run at a lower speed for you. Maybe there's even an Open Firmware upgrade available. For what it's worth: good luck! Cheers, Andreas aka Mac User #330250 -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
