Re: Sorry, Intel
- From: cew <cewillis2nd@xxxxxxxxx>
- Date: Tue, 18 Dec 2007 07:56:52 -0700
w_tom wrote:
On Dec 17, 10:09 am, cew <cewillis...@xxxxxxxxx> wrote:As good a explanation as I've heard. Haven't had any way to monitor +5sb.
Appreciate that your 'old supply' problem may have existed even when
the computer was built. It is normal for a computer to boot and work
even if the power supply is defective. As the defective power supply
ages, then the failure only gets worse enough to finally create other
strange problems.
Same thing that could have been done to avoid the problem months ago
should also be performed on the new supply. Then you 'know' a power
supply is working properly - not just hoping after four days.
The tool is so inexpensive and 'so complex' as to be sold even to
Kmart shoppers. The two minute procedure is described in "When your
computer dies without warning....." starting 6 Feb 2007 in the
newsgroup alt.windows-xp at:
http://tinyurl.com/yvf9vh
The relevant part, in your case, is measuring voltages on any one of
orange, red, yellow, and purple wires when all peripherals are
accessed (multitasked) simultaneously. That means complex graphics on
the video controller, while sound card is making sound, why searching
is ongoing on hard drive, while internet is being accessed, while ...
get the idea? A full load - and only then are those voltages
measures. Numbers must exceed 3.23, 4.87, and 11.7. If yes, then
power supply is 100% functional. Again, the power supply could be
defective and will still boot the computer. But those numbers can
discover a power supply 'system' (which is more than just a power
supply) as 'definitively good'. Your only useful answer is
'definitive'.
That motherboard voltage monitor also needs calibrating. Again, the
meter is what calibrates those numbers so that the monitor can
actually monitor.
Was the monitor reporting excessive ripple? Not likely. Ripple
voltages vary too fast for the monitor to see ripple. However the two
minute procedure would also eliminate excessive ripple as a reason for
failure.
Another possible reason for unexpected wake ups were missing
functions in that original power supply. When selling to computer
assemblers, many power supplies are missing functions so that power
supply price is a little lower and profits are significantly higher.
Yes, the cheaper supply can even provide higher profits. How many
computer assemblers would know of those missing functions?
What is your best way to know those required functions are
included? The power supply comes with a long list of written numeric
specs. What is common among supplies that are missing essential
functions? No written specs. Of course this is irrelevant to the
more important point here. Until those voltage numbers are taken when
supply is under full load, then you don't even know if the new supply
is OK. Those same numbers may have identified the old supply as
defective long before surprises were occurring. Power supply may have
been defective even when the system was first built. Only numbers
taken under full load would have identified the defective part - long
before anomalies occurred.
BTW, this also identified a good or bad +5VSB (purple wire) problem.
http://www.antec.com/specs/SP450_spe.html
How does 'under full load' have anything to do with +5Vstandby - no load on anything but that circuit.
.
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