K8 notsogrand

Thank's for your reply
But I think I'm going to take in and get it looked at.
Becouse if the new supply is not working right, theres not much I can do
about it.
Besides buy a new one.



"w_tom" wrote:

> On Aug 16, 2:25 pm, "Spirit" <no...@notthere.net> wrote:
> > Actually for a power supply to cause problems the voltage can be
> > low or not clean enough of a wave length (tough generally computers
> > are fairly forgiving of either of these issues). High voltage or a high
> > forced amperage can also cause issues, especially spikes.
>
> Power supplies must maintain perfectly in-spec power even when AC
> mains voltage drops so low that light bulbs are only at 40%
> intensity. Even Intel specs for power supplies make that demand.
> That is another function of power supplies - to make AC power problems
> irrelevant. But again, when computer assemblers only buy on dollars
> and watts, then dumped into the market are many supplies missing those
> required functions.
>
> Let's look at the output of a computer grade UPS when in battery
> backup mode. That 120 volt modified sine wave is ... two 200 volts
> square waves with up to a 270 volt spike between those square waves.
> Is that clean electricity? Of course not. Why does that one UPS not
> cause computer problems? Again, power supplies make such power
> problems irrelevant. That is required.
>
> That UPS outputs power so 'dirty' as to damage some small electric
> motors. Same electricity is perfectally acceptable to properly
> constructed computers. Just another function that must be inside that
> power supply.
>
> However we don't let such power problems remain. For example, if
> wall receptacles are installed with wires pushed into the back, then
> intermittents can occur that exceed power supply functions. Whereas
> 'push in the back' wiring is acceptable for lights, it is completely
> unacceptable for computers. A quick inspection by removing receptacle
> cover plates will confirm good wiring wrapped around and secured by a
> side mounted screw. Using the screw to clamp wires is important so
> that power supply can make other electrical problems irrelevant.
>
> But when a supply is failing, the computer may still boot. Only way
> to find that failure is using a tool so ubiquitous as to be sold even
> in K-mart, Sears, Radio Shack, Wal-mart, hardware stores, Lowes, etc.
> That 3.5 digit multimeter costs only $20 - less in Wal-mart and when
> on sale. Two mnutes with the meter means previous posts were
> unnecessary beause meter numbers are so definitive - not subjective..
>
>