Joerg, Do not reverse the fan in the P/S. The Power supply is the most robust piece of electronics in a PC and is actually designed to run 'HOT' (well hotter than a CPU or motherboard anyway) and reversing the fan will just blow hot air into sensitive electronics.
Depending on the case style, it may actually be the CPU fan making all the noise. I have seen these vented directly to the back of the case... and they are really noisy. Many new cases also have a second fan on the front of the case to blow air into the case. If your case has a spot for one there, it is a good idea to install it. This fan when fitted is normally the one which fails first (due to dust and dirt) and not only tends to keep the PC cooler, but keeps case in positive pressure keeping your CD and floppies cleaner, and relieving load on the Power Supply fan. It IS a good idea to put a filter on the front fan, even a coarse one makes a difference, or at the very least keep your PC off the floor ( glances at tower sitting ON the floor ;P ). Most fans are have bush bearings. These can fail as early as 12 weeks in operation (we have some PCs in the worst of environments like the Factory Floor, literally). Ball bearing ones are quieter and last for years. We currently pay (trade) around $6 (Australian) $3 (US) for a normal fan and twice that for the ball bearing variety, so it is worth the little extra. Ian -----Original Message----- From: bp0026 [mailto:bp0026]On Behalf Of Joerg Johannes Sent: Wednesday, July 11, 2001 7:51 PM To: debian-user Subject: [very very OT] noisy power supply Hi list My power supply takes warm air from inside the PC case to cool itself. As Athlon processors (especially >1000 MHz) tend to produce lots of heat, the temperature-sensitive power supply fans turn faster and faster, making lots of noise. (When I start the box, I don't hear it at all, but 10 minutes later, I wish back to my old one...) So my idea is: I open the power supply, flip the fan so that it blows cool air from outside into the case, voila, much less noise. Is this a good idea or rather stupid? thanks joerg -- Did you know that if you play a Windows 2000 cd backwards, you will hear the voice of Satan? That's nothing! If you play it forward, it'll install Windows 2000. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
