On Sep 28, 2005, at 12:31 PM, <[EMAIL PROTECTED]>
<[EMAIL PROTECTED]> wrote:
on 9/28/05 12:24 PM, Are Hansen at [EMAIL PROTECTED] wrote:
My iBook G4 has quite a few lighter (and some darker) blotches on the
screen. Some are dirt and fingerprints, though some seem to be
hardware.
What do you guys use to clean LCD screens? Will isopropanol work and
not harm it?
Any experience how much blotchiness is needed to make a successful
complaint to Apple/dealer and demand repair/replacement? Fortunately
product guarantee here in Norway is two years, I'm still within that
I read somewhere long ago that water should never be used in
cleaning LCD or
CRT screens. The article suggested using Everclear or grain alcohol
and
using what was left over for a spiked punch. Isopropyl alcohol has
more
contaminants in it than pure grain alcohol.
That's wrong on MANY levels. Many commercial screen cleaning nostrums
are simply small expensive spraybottles of deionized water.
Isopropyl alcohol, at least in the strength most people get, is a
60:40 mixture of Isopropyl and DI water.
Isopropyl alcohol, being a longer chain length alcohol, will do
better at dissolving grease and oils than ethanol will; it's a
slightly better organic solvent. However the stuff on those screens
(and on keyboards and mice) also has a lot of polar, water-soluble-
only material in it, that pure isopropyl or ethanol will not dissolve.
Truthfully, either will do reasonably well, but you'll have to add
water to pure ethanol to get everything, especially if you eat at
your keyboard.
Denatured alcohol, otoh, has got a bunch of nasty stuff and dyes, and
other crap in it to clearly flag it as 'Poison', you should never use
that.
The key is to never spray the monitor: wet a soft cloth or microfiber
pad and use it to clean the screen.
--
Bruce Johnson
This is the sig who says 'Ni!'
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