Re: UPS effectiveness (was: Power failure-computer won't start)

2008-12-28 Thread Anne Keller-Smith
We've always had UPS's, usually APC, and *all* of our computers have worked without any major problems for long periods of time, say 8-10 years. Usually in the $75-150 range. So I'm happy with them. I have had good power, flaky power - but the Macs are happy critters. On Dec 28, 2008, at 6:19 AM

Re: UPS effectiveness (was: Power failure-computer won't start)

2008-12-28 Thread w_tom
On Dec 28, 6:19 am, Bill Christensen wrote: > ... > I never said anything about defective hardware. I said I ran "one > of the diagnostic/repair tools on it, fix a bunch of stuff". By that > I was referring to SOFTWARE diagnostics and SOFTWARE fixes - Disk > First Aid, Disk Warrior, Norton, wh

Re: UPS effectiveness (was: Power failure-computer won't start)

2008-12-28 Thread Al
On Dec 28, 6:19 am, Bill Christensen wrote: > At 10:16 PM -0800 12/27/08, w_tom wrote: > > >On Dec 27, 10:55 pm, Bill Christensen > >wrote: > >>  Finally I decided that the prime difference was the power.  They were > >>  unprotected.  We've got a big UPS (sine wave output, not square > >>  wave

Re: UPS effectiveness (was: Power failure-computer won't start)

2008-12-28 Thread Bill Christensen
At 10:16 PM -0800 12/27/08, w_tom wrote: >On Dec 27, 10:55 pm, Bill Christensen >wrote: >> Finally I decided that the prime difference was the power. They were >> unprotected. We've got a big UPS (sine wave output, not square >> wave). We're all way out at the end of the power system, and t

Re: UPS effectiveness (was: Power failure-computer won't start)

2008-12-27 Thread w_tom
On Dec 27, 10:55 pm, Bill Christensen wrote: > Finally I decided that the prime difference was the power. They were > unprotected. We've got a big UPS (sine wave output, not square > wave). We're all way out at the end of the power system, and the > power is definitely prone to spikes and surg

UPS effectiveness (was: Power failure-computer won't start)

2008-12-27 Thread Bill Christensen
At 7:21 PM -0800 12/26/08, w_tom wrote: > Low voltage is not hard on motherboards. Electronics has been >required to not be harmed by low voltage for generations - even long >before PCs exists. However myths to promote UPSes live on. In fact a >chart from an industry standard 30 some years ag