Archived from groups: alt.sys.pc-clone.dell (
More info?)
Some years ago, the pretty face news anchors (who did not do
their job) would report high EM fields may have caused cancer
in kids. So they showed a high voltage transmission line.
Nonsense. What they never told us: sources of those strong
fields are, instead, in wires behind walls and floor. If kids
were being threatened by electric fields, then those dangers
would be the same EM fields that are causing your monitor
problem.
The solutions is not easy. Either shield those wires from
your system or move your system. IOW first locate those wires
behind walls, floors, etc. Not every wire. Many wires, such
as those to wall receptacles, carry trivial currents. Where
are wires to large current consumers such as electric heat,
stove, electric hot water, etc? Only then are you ready to
address a solution. BTW such low frequency field problems are
not trivial.
Monitor is a victim of EM fields. What is the source of
those fields? Other field generating devices could be the
source such as a defective fluorescent ballast. But a most
likely source is high current wires that may also travel
underneath a bedroom bed (so why did that pretty faced anchor
not mention those wires) or be grouped with numerous other
wires traveling up wall into attic.
medgirl wrote:
> All right - I've identified the problem at last, but I would
> appreciate any suggestions as to how to solve it. I finally moved
> the monitor, computer, mouse, keyboard, and surge protector to
> another room, where everything worked perfectly (I should have tried
> this to start with). Then we tried hooking the computer up with an
> extension cord to the same plug we had been using before and, again,
> everything worked perfectly at all refresh rates.
> Incidentally, the image is much nicer at refresh rates of about 75 Hz
> or higher. I can definitely tell a difference in comparison to the
> 60 Hz, though, honestly, I can't distinguish much difference at >75
> Hz. Anyway, the problem is clearly something about the location of
> the computer, but it's a daunting task to try to imagine what
> specifically is doing this. Any ideas as to the most likely
> culprits? Is there any way to shield the monitor from other
> frequencies?