On Thursday 26 October 2006 17:48, Tim wrote: > On Wed, 2006-10-25 at 22:18 -0500, Mike McCarty wrote: > > I am myself not an expert on this matter, and run with sensors > > turned off. It seems pretty useless to me. Unless you have a > > machine which is improperly designed, or which works in a > > harsh environment, then it will run cool enough, and with > > proper voltages etc. > > I can think of one probable reason to do so with an ordinary computer: > Protection against a fan that seizes. They do do it, and sometimes > quite unexpectedly. Some motherboards will beep at you when it happens, > but do nothing more. Some won't even do that. It could be handy to set > something that does a clean shutdown, or even a rapid one, if a fan > jams. I had that happen on the PSU fan on my Aiii-friend machine recently. I was getting some unusual flickering on the GUI, then the machine shutdown. Some hours later, having stripped down the PSU, and re-oiling the fan, and at the same time cleaning all the crud out of the machine with the vacuum cleaner on blow, it booted up ok. I know I-Friend are cheap machines, but am gratefull that the PSU has a temperature sensing device built-in that stops the PSU going into meltdown. Nigel.