"steve" wrote in message
...
I am assuming that by 'power supply' you really mean some kind of 'power
filter / conditioner'.

My opinion: Unless you have really nasty dirty power -- like one might
expect to have in an industrial factory or machine shop where they are
running large electric motors -- you will be wasting your money on a power
line filter. I have yet to see a home with power bad enough to warrant
buying and using one of these filters.


Thanks Steve. So I take it you mean that the stuff at
http://www.monstercomputer.com/power/ is a waste of $$$s??

I have been to a local stereo chain store -- and saw the sexy display for
the latest 'miracle power filter' complete with audio and visual noise
which is 'amazingly' filtered by the miracle product......

It was the biggest scam I have seen since garden hose diameter speaker
wire.

Put it this way -- if the power supply built into any consumer product was
so poor that it needed one of these filters, the product would be useless
without one.

What manufacturer would sell a product that would not work 'right out of
the box' for the majority of consumers? It is only in the most extreme
conditions where the power line is unreliable, terribly noisy, etc where a
filter may improve the situation, or help to protect the equipment from
damage.

Your problem sounds to me like it may be the result of RF interference.
Have you got a transmitter nearby? Look for antennas. If a transmitter is
close (or powerful) enough to your equipment, even quality consumer gear
will have problems. Often some inexpensive clamp-on ferrite beads applied
to the power cords / and audio in / out cables as close to the victim unit
as possible will greatly reduce or eliminate the interference problem.

The only "new" transmitter I have is a new cordless phone, but that is in
the bedroom on the second floor. Basically our boom box (and computer)
are plugged in and on 24-7 (the boom box is left on "CD"where the red light
is on, as opposed to "tape" when it is off) -- and I found that occasionally
it
buzzes or hums (this is when it is on "CD" but NOT when any music is
playing). Turning it "off" (putting the selector to "tape" and thus having
the
little red light go off) ends the buzzing / humming noise.

Could RF interference cause this buzzing even when the system wasn't playing
music -- just "on".

It is weird because 5 seconds ago my PC speakers just buzzed at me -- making
the kind of sound you get when you turn a mike on -- not the loud squeal,
but
a sound -- the closest I can get to -- like you hear when clearing your
throat...
This time the monitor didn't flicker of have lines running across it...

Where do I get the ferrite beads? Radio shack?

Thanks SO MUCH for your help!

Bharat