---------- Original message ---------- Subject: Re: Strange fan issue with G5 + Leopard Date: Wednesday, 07. December 2011 From: GLT <[email protected]> To: [email protected] > I have an occasional problem similar to those mentioned above. My G52 2.3 > GHz Dual Processor (early 2003 if I remember correctly) fan speeds > sometimes make no sense at all. > > The ambient temperature is generally at around 70 degrees F. or a degree or > two cooler in the winter (as now). > > I can be browsing the web, moving local files around, building C code, > etc., and the fans generally run at a pretty low speed. > > Now and then, though,--sometimes when the system is just idling along--the > fan speeds increase dramatically. Sometimes the system even *hangs up*, > with the fans running at full speed, and I have to hit the power button. > > This does not happen often but it sure bugs me when it does. What happens > if I leave my machine running while I'm away from home, and the fans go to > full speed for several days? Do the fans bur out? Would the system > overheat? Who knows? > > So I just never leave the system fully up when I'm away. (I leave it in > Sleep mode so that the fans don't run at all.)
I normally put the system to sleep when I go. Since everything stops while only vital components, like the memory, are keeped on power, this should be a valid workaround. I had this only once, but I was away at that time. Automatically going to sleep was disabled. When I came back, fans were at 100%. But, on top of that, Mac OS X 10.5.8 had crashed with the famous "shut down your computer hitting the power button" graphics on the screen. Never happened again. I don't know what went wrong… I doubt thou that fans at 100% would do any harm, even for days. The processor and other components will just be cooler, the noise greater, and the fans will be worn out faster. But I agree this isn't something you generally want for a temperature management. BTW, which version of Mac OS X are you using? In any case, the fans behave strangely while working and it is, if nothing else, often just annoying when it happens. 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 [email protected] For more options, visit this group at http://groups.google.com/group/g3-5-list
