On Saturday 06 January 2007 18:53, Seth Goodman wrote: > Mike McCarty wrote on Saturday, January 06, 2007 7:48 AM -0600: > > The two most common causes of PS failure are spikes on the AC and > > failing fans or otherwise obstructed air flow. > > Transients in the AC line causing damage to power supplies is a > design issue for the supply. We have known for years how to protect > supplies from line transients and how to prevent transients from > reaching the supply outputs. While the energy in line transients > and the power line impedance are statistical quantities, the root > cause of this failure is inadequate design. It is not normally > related to production quality. > > Even on well-designed power supplies, the fan is far more likely to > fail than any other component. It is not difficult to have the > supply gracefully shut down if the airflow stops for any reason, > but this feature is often absent from consumer-grade PC power > supplies. > > -- > Seth Goodman
I've recently suffered an abrupt shutdown, which I discovered was a seized-up fan (ran out of oil), and that was on an I-Friend machine, and certainly a lower end of the market machine. Thankfully the PSU had a thermal cutout, and a trip to the backyard, and a thorough de-dusting with the vacuum cleaner on blow, accompanied by a stripdown of the PSU, and a re-oiling of the fan fixed it. Btw. The fan said thank you, and has been turning for the last 4 months without complaint. Nigel. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
