[Novalug] OT - Power Supply

JRR energy.wwind@cox.net
Wed Mar 11 11:51:12 EDT 2009


JRR wrote;

    You cannot check a digital fly forward / fly back power supply 
unless it is connected to a load.
    The readings will be wrong.........

Joel G wrote:
> John Yodsnukis wrote:
>
>    > Doing a little early spring cleaning.  I have a couple of tower PCs
>    > that appear to have faulty power supplies.  How can I test this?
>    > Can I just swap a power supply from a working machine?  The plugs
>    > look like they will fit, but it can't be that easy, can it?
>
>
> If any of your Spring Cleaning discoveries are older Dell machines,
> the answer is "proceed with extreme caution".  :)  For a number of
> years, Dell sold systems with special, non-standard wiring between
> the power supply and the motherboard, but committed the sin of using
> exactly the same connectors as the ATX industry standard; the result
> was that an unsuspecting computer owner who tried to replace or upgrade
> either the power supply or the motherboard might fry either, or both.
> I don't believe that Dell does this anymore, but given that precedent,
> it's still wise to check before you swap, regardless of brand or age.
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