video interference?

Dick Seabrook dick.seabrook at
Sun Feb 17 17:00:54 UTC 2008

On Feb 17, 2008 11:39 AM, Frank Cox <theatre at> wrote:

> I'm starting to think I have a different problem with this computer,
> that's not
> operating-system related.
> I occasionally have slowly-moving horizontal lines on my monitor that show
> up
> on the lighter coloured parts of my screen and travel upward.  It seems to
> come
> and go, and looks for all the world like electrical interference.  The
> lines are
> very small, maybe 15 per inch, and are mostly visible on the top half of
> the
> monitor.  On a smaller monitor I might not even notice them, but on this
> 22"
> wide screen monitor it's distracting.
> I moved the computer further away from the monitor and changed its
> orientation
> but that didn't change anything.  I also tried plugging the monitor and
> computer into different/separate electrical circuits and tried it without
> my UPS
> as well.
> Is there anything else I should be trying?  I'm running out of ideas.

I'm sure you've thought of this, but a routine check for overheating
wouldn't hurt -- power supply, chip  and case fans, etc.
Dick S.

Dick Seabrook ~ Anne Arundel Community College ~ Speed the Net!
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