I disagree. It is highly unlikely that the UPS is causing the
problem. Most use SMPS so there is no LF magnetic field to radiate
and beat with the monitor scan rate. He didn't say that the shake
got worse when he engaged the UPS (where there is more likelyhood
of radiated field from the high power xformer).

He also said he could find places where is shook less. While low
power line voltage could cause the monitor to shake, it wouldn't
change with orientation. I would assume that he also didn't have
the problem in his previous location, and I would expect the UPS
to have been in close proximity at the old location.

Andre said
"next to my house about 20 feet a way there is a power electrical post."

It is more likely that he is suffering from radiated LF magnetic
field from a power transformer on the pole. If moving a 12" square
sheet of steel (unroll a big 'tin' can to use as a shield) around the
monitor changes the shake, he has external
magnetic interference. Call the power company (after confirming that
you have a power transformer on the pole) and complain about the
'radiation' you are being exposed to. They are PARANOID about potential
lawsuits from EMF exposure so they will come out and change the
transformer proto. If they won't, go to the media with the story about
being 'exposed to unwanted EMF'. There is lots of literature, pro and
con as to the deleterious effects of exposure to EMF, so you have a very
big club to use on the power company (even if it's wrong <G>).
Where PR is concerned perception is everything.

Andrew Warren wrote:
> Andre Abelian <PICLIST@MITVMA.MIT.EDU> wrote:
>
> > After I moved and started to setup my PC monitors in my room I
> > noticed that monitors are shaky. First I tried to change settings
> > it didn't effect at all when I started to move the monitor around I
> > noticed there are a few spots that shakes less but still is not
> > expectable. I tried to cover with the coil it helps but very
> > little. I disconnected almost every thing but still doing it and
> > last thing I tried is I used backupUPS and turned the main power
> > off the monitor still was shaky.
>
> Andre:
>
> It's probably your UPS that's causing the interference.  Turn it off
> and plug everything directly into the wall; if that solves the
> problem, you'll need to get longer power cords so you can move the
> UPS as far away from your monitor as possible.
>
> -Andy
>
> === Andrew Warren - fastfwd@ix.netcom.com
> === Fast Forward Engineering - San Diego, California
> === http://www.geocities.com/SiliconValley/2499

--
Robert.Rolf-AT-UAlberta.ca
U of Alberta, Neuroscience, 513 HMRC
Edmonton, Alberta, Canada, T6G 2S2