(Msg. 17) Posted: Tue Jul 22, 2008 3:17 pm
Post subject: Re: Power Supply Problem!? [Login to view extended thread Info.] Archived from groups: microsoft>public>windows>vista>hardware_devices (more info?)
> Have u ever seen a electrical device that its metal cover lights the
> continuity Tester!?
> Have you?
Yes I did. As a former electrician I can tell you that this is normal if the Power supplies supply (Electricity) is not grounded. Ground the damm PS as it is supposed to be and get on with your life
--
Peter
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"Leon_Amirreza" <r_rahmaty DeleteThis @hotmail.com> wrote in message news:u8ZoKD$6IHA.5024@TK2MSFTNGP03.phx.gbl...
(Msg. 18) Posted: Tue Jul 22, 2008 5:43 pm
Post subject: Re: Power Supply Problem!? [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)
"Hobo" <Hobo DeleteThis @nospam.com> wrote in message
news:eOKdnRsbRpXbthvVnZ2dnUVZ_obinZ2d@giganews.com...
>
>
> Leon_Amirreza wrote:
>> I contacted the manufacturer support they said this:
>>
>> 1- Its the power that induced by circuits inside the power supply (not a
>> short circuit) and its not above 200mA and can be solved by proper
>> grounding.
>>
>> I know my power supply is not properly grounded cause i disconnected the
>> ground wire BUT
>> does this statement by the support personnel sounds logical to a circuit
>> engineer
>>
>> OR ARE THEY WHITE WASHING A SERIOUS PROBLEM IN THEIR PRODUCT?
>>
>> any comments would be appriciated.
>>
>
>
> Yes! Considering that you have eliminated proper grounding, that
> explanations sounds entirely accurate. Have an electrician restore a
> proper ground connection, and further, as a safety concern, I would
> suggest you not plug in that system until it is repaired!
>
(Msg. 19) Posted: Wed Jul 23, 2008 9:56 am
Post subject: Re: Power Supply Problem!? [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)
On Jul 22, 1:39 am, "Leon_Amirreza" <r_rahm... RemoveThis @hotmail.com> wrote:
> I disconnected the ground pin in the wall socket so actually the
> ground pin is not connected to the ground. I took it to a friends
> house wich has apower supplytester (i dunno wich model) but it
> tested mypower supplylike this:
> ...
> it conncted to the socket to the wall and then connected the plug that
> connects to mother board to that tester. the tester has LEDs for theses
> voltage:...
> He said that mypower supplyworks correct cause all LEDs lights!
Anyone who knows electricity also knows that a power supply tester
can report some failures but can never report a power supply as good.
Meanwhile, your failure clearly is not detectable by a power supply
tester. Your friend should have known that.
Appliances will always leak some current into metal chassis.
Always. If that current has no place to go, then resulting voltage
increases to 60 or 120 volts. What voltage will your tester light
at? If you don't have numbers, then you don't know what you are
looking at and cannot get useful answers here.
That chassis without safety ground (third AC prong) with become >60
volts. What is the minimum voltage to light your testing
screwdriver? You must always know the numbers if only to get a useful
reply here.
Power supply tester says same thing. +5 volt light can light when
voltage is too low but not zero. What did that power supply tester
report? What are numbers that do light, does not light, and might
light that tester's LEDs? Notice - three conditions. Again, without
numbers, nothing useful is learned.
Get that safety ground connected. Buy yourself a multimeter if you
want to learn anything. Then report back as others have recommended.
Even you friend should have learned long ago how useless his power
supply tester is - especially for your problem. You should have known
that the third 'safety ground' prong is essential to protecting human
life - must not be removed. The guy who implemented a safety ground
knew far more than you. Why did you remove it? Power supply tester
also reported nothing useful. How would you know? No numbers is a
first indicator.
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