On Jul 16, 6:23 pm, "tsaec...@att.net" wrote:
> Has anyone any ideas about what happened to cause this port to quit
> like this and then come back?
You are trying to have an answer by viewing what all 10 things are
doing simultaneously. Therefore obviously confused. Always start at
the lowest
On May 29, 12:56 pm, Doug McNutt wrote:
> Analysis:
> ...
> The real problem with MOVs is that they will only handle a few hundred such
> pulses
> in their lifetime. Some manufacturers add a green LED to their boxes as an
> indicator that the MOV has been damaged too many times.
Numerous pulse
On May 28, 4:10 pm, diane wrote:
> Someone on another list mentioned
> these:http://www.amazon.com/Belkin-SurgeCube-Surge-Protector-1-Outlet/dp/B0...
> Any experience with them or similar?
View its specifications. Where does it list each type of surge and
protection from that surge? It does
On May 27, 11:19 am, Doug McNutt wrote:
> w_tommust be using the 200V figure to represent the peak to peak voltage
> of the square wave. That's the difference between minus 100 volts and plus
> 100 volts with respect to the common wire and is what one would measure
> with an oscilloscope.
>
> The
On May 27, 7:54 am, insightinmind wrote:
> I thought I read somewhere that this could cancel some protective
> measure of a power strip ... or introduce some kind of electrical
> noise into a line ... maybe that was only for audio equipment? ...
Electroniucs prefer powering simultaneously.
On Apr 29, 2:07 pm, Anne Brataas wrote:
> More thanks to more folk for insight into power issues! I so
> appreciate your experience and knowledge and willingness to share it!
I would love to hear what these people are seeing on their
oscilloscopes. Because that is not the waveforms I observe.
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
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
On Dec 26, 1:59 pm, Anne Keller-Smith wrote:
>...I like to get a Uninterruptible Power Supply ... I heard
> that's hard on the motherboards, even when it's a slump
> in voltage. The UPS makes sure the Mac gets a consistent
> voltage at all times ...
Low voltage is not hard on motherboards. El
