How do I remove a mark left by a 'Sharpie' permanent marker off a TFT
flat monitor screen?

dkulik..

Thanks for your question.  Sometimes, certain items live up to their
name.  Permanent markers are one of those things.  There is, however,
a solution that should rectify your problem.

PermErase (http://www.natureplex.com/permerase/) is a non-flammable,
non-toxic product that can be used to remove permanent markings on
semi-porous surfaces such as monitors.  You can order directly from
their website.

Thank you again for your question and if you need any additional
clarification, please let me know!

Regards,

-THV

Search Strategy:
permanent marker removal

I completely removed two 'Sharpie' "permanent" marks off my TFT
monitor SCREEN by rubbing the marks with cotton swabs moistened with
HEINZ distilled white vinegar (5% acidity). No visible changes on the
screen!
Thanks a lot!!!

Or try scribbling on the mark with a DRY ERASE marker, and wipe that off.

Dkulik-ga asked about the monitor SCREEN.  If this is in fact what
he/she is talking about (the face of the monitor), using a chemical
could damage the monitor and void the warranty.  TFT monitors and LCD
monitors are one and the same.  LCD monitors are more delicate than
the old glass screen monitors.

"Cleaning the outside of a CRT and TFT monitor case is no different
from that of the main PC case, except that monitor cases are usually
very well ventilated. That means there are lots of holes.

The same damp cloth used for the case should be used with the same
cleaning fluid, but it is vital that the cloth is almost dry as any
liquid that seeps into the case could mean buying a new monitor.
Cleaning is simply a matter of running the cloth over the whole unit,
with the exception of the screen itself.

Most modern monitors have a special coating on the screen to limit
reflections, and this can be damaged easily if cleaned incorrectly.
The best way to clean screens is to use special cleaning wipes. Use
them according to the instructions; use the first wipe to clean the
screen and the second to dry and polish it.

If your monitor is knocking on a bit, or you don't want to buy special
wipes, a careful application of a water and vinegar-based window
cleaning solution will clean both TFT and CRT screens but extreme care
should be taken to ensure that the screen is cleaned but not moistened
as the water may run down the screen and into the internals."

Seen at:  http://www.computing.co.uk/Features/1133919+tft+monitor+cleaning+method&hl=en&ie=UTF-8

I used the following for my Google search:  tft monitor cleaning
method

I was haphazard enough to sharpie on my monitor once, and a friend of
mine quickly came to the rescue with alcohol no less. Rubbing alcohol
should work fine, but I think he used schnopps, not quite sure. This
was right after I markered, so it may not work so well after its been
sitting for a while. Also, as others have mentioned, TFT LCD monitors
are more delicate than normal CRT monitors, so this may damage your
monitor (I am unsure of this)