Archived from groups: rec.video.desktop (
More info?)
Corporate Monkey wrote:
> Ok..I fixed it. I was browsing around the net and someone had the
same
> exact issue as me. Though plugged into different wall outlets, were
> still on the same wall. I got a grounded, outdoor extension cord and
> plugged the PC into an outlet in another room to see what would
happen.
>
> VIOLA!
>
> The lines disappeared. So if anyone else is googling this, first try
> plugging your PC into a wall outlet in a different room or a
different
> wall in the same room. Then go from there.
>
> Thanks to those who helped!
> CM
>
> Rick wrote:
> > "Corporate Monkey" <corporatemonkey@gmail.com> wrote in message
> news:1111658168.810777.156150@o13g2000cwo.googlegroups.com...
> > > Thanks for the feedback. However, can you explain what I need to
do
> in
> > > more detail...novice here. What is meant by grounding. My outlets
> are
> > > all "grounded", is this what you mean?
> >
> > No.
> >
> > > If not, can you explain?
> >
> > In a nutshell:
> >
> > If the cable from your cable TV company is running directly to your
> > computer, disconnect it. Then play a direct video source, such as
a
> > DVD player on your computer, or a DVD player or VCR connected
> > to the input of your video card, out to your TV. Do you still get
> the
> > scrolling lines? If so, the problem is relatively easy to fix.
Just
> make
> > sure your computer and TV are plugged into the same outlet, or at
> > least different outlets that have the same source of ground.
> >
> > If the line is no longer there, then the problem is your cable
> company's
> > cable, and is more complicated to fix. You or your cable company
> > will need to install a RF (radio frequency) isolation transformer
at
> the
> > cable connection to get rid of it.
> >
> > > Rick wrote:
> > > > "Jan Panteltje" <pNaonStpealmtje@yahoo.com> wrote in message
> > > news:1111619879.ec12e5432bb69ea71910802d1cdb46e5@teranews...
> > > > > On a sunny day (23 Mar 2005 14:29:21 -0800) it happened
> "Corporate
> > > Monkey"
> > > > > <corporatemonkey@gmail.com> wrote in
> > > > > <1111616961.283140.127450@g14g2000cwa.googlegroups.com>:
> > > > >
> > > > > >Hi everyone,
> > > > > >
> > > > > >I'm testing an ATI All in Wonder on my TV. The quality
overall
> is
> > > quite
> > > > > >good (I'm surprised). The only annoying feature are these
thin
> > > > > >horizontal lines that scroll up the tv, about 8-10 inches
> apart
> > > from
> > > > > >one another. The line starts at the bottom and proceeds to
the
> > > top. It
> > > > > >takes about 7-10 seconds for one line to make it up the
> screen.
> > > > > >
> > > > > >Any thoughts on how to get rid of the lines?
> > > > > >
> > > > > >Thanks!
> > > > > >CM
> > > > > Looks like a 'hum' problem, the speed the lines move is the
> > > difference
> > > > > between the V scan frequency the computer makes, and the
mains
> > > frequency.
> > > > > Check your video cable (shielding).
> > > > > It is also possible the TV video in (circuit) is not really
> that
> > > good, if
> > > > > you have one, test on an other TV.
> > > > > Computer should be properly grounded (earth), and if possible
> the
> > > TV too...
> > > > > Cable should not be too long.
> > > > > Running an extra ground between TV and computer could also be
> an
> > > option.
> > > >
> > > > This problem can also occur if your outside cable doesn't have
> > > > a common ground with your computer equipment (very few cable
> > > > systems are grounded locally). Try disconnecting your cable
and
> > > > I bet you don't get the same scrolling lines with e.g. a DVD or
> > > > VHS source.
> > >
just a thought, it may be worth buying an outlet tester and check that
your grounded outlets are actually grounded.
You can buy one of these things most places for less than $10.
They will show if ground is ok and if the other wires are reversed.
I have found it helps to ensure that both units are working on the same
phase.
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