Re: +12 VOLT Indicator on Winbond Hardware Doctor
From: w_tom (w_tom1_at_hotmail.com)
Date: 12/08/04
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Date: Wed, 08 Dec 2004 00:23:29 -0500
That 'swap PSU' test only implies that something else is
wrong. However assumed (and not stated): is the new PSU
exactly same? In the meantime, numbers are necessary to
provide useful assistance. Considering all the work and all
the added risk to both your system and his PSU, it makes more
sense (and saves significant time) to first take those voltage
readings.
Those upper and lower limits are significantly outside of
acceptable voltages. If you are getting alarms with limits
that far too wide, then surprising the computer is still
working. Winbond voltage readings are only as accurate as
hardware on motherboard. Use the meter so we know what your
system is really doing. Doing anything else will only make
you and us more confused. Those multimeter numbers are
essential. Without them, your responses will only be wild
speculation.
BTW what did those other information sources (Device
Manager, system log, etc) report? Worry more about getting
every piece of information requested. Being confused should
have come much later.
Ted wrote:
> I have a friend that has let me borrow a PSU, when I check Winbond
> hardware Doctor with the new PSU, instead of the alarm sounding now
> and then, it's on constant.
>
> Does that make any more sense? Im so confused???
>
> "w_tom" wrote:
>> Obtain that meter even in a screw driver store. Meter is as
>> essential as a screw driver. So ubiquitous as to be sold even
>> in Home Depot, Sears, and Lowes. So inexpensive that it is
>> now a standard tool.
>>
>> BIOS measurement circuits can vary significantly. How
>> accurate are they? An honest computer provider or motherboard
>> manufactuer provides that numerical specification. However a
>> 'motherboard voltmeter' must be accurate enough duplicate the
>> accuracy of a 3.5 digit multimeter. See spec limits in
>> previous posts. Voltages must reside in the upper 3/4s of
>> those limits. Anything else can mean strange and intermittent
>> failures. If the meter is less accurate, then the voltage
>> readings must lie even further inside those limits.
>>
>> Limits provided below are too wide. For example, upper
>> limit is 12.6. Below, that same limit is 13 volts - too
>> high. A voltage below 4.85 is too low. And yet limits below
>> are 4.5 - too low.
>>
>> Don't screw around. Don't waste good money and time by
>> shotgunning - scam that an auto mechanic does when he does
>> not have basic knowledge. Get the meter to confirm an
>> essential component - the PSU. Then move on to other 'usual'
>> suspects using standard information sources such as system
>> (event) log, Device Manager, and comprehensive diagnostics
>> provided free by any reponsible computer manufacturer.
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