Article View: comp.sys.mac.portables
Article #474Dark line on PB 520c screen?
From: Carl Edlund Anderson
Date: Mon, 01 Jun 1998 00:00
Date: Mon, 01 Jun 1998 00:00
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During the course of normal operations this morning a mysterious line
of darkened pixels appeared on the screen of my PowerBook 520c. It started
at the bottom of the screen, about 6/10ths of the way over from the right
hand side and ran up to about the middle of the screen. It appeared
generally as a line of darkened pixels, but would sometimes switch to oddly
coloured pixels--the pixels were never actually non-functional, since they
still could show correct colours and shapes depending on what the
background or window in their region happened to be.
I immediately panicked, of course, and ran every kind of test and
maintenance utility that I had. I didn't expect this to do much, and I
don't think it did, but after 30 minutes or so this line "dimmed" to appear
as a line of pixels slightly greyer than they should be. The line is still
pretty much detactable as I type now, though not nearly as gruesomely
distracting as it was.
This leaves me with the nagging worry that the problem will
re-intensify, probably worse than before, without warning.
Anyone familiar with this or similar problems? I can't quite figure
out what's going on, but this is the only passive matrix colour screen I've
worked with. It _was_ built in 1991, so it _is_ getting on a bit, but it's
still worrying.
BTW, does anyone know a good Cambridge-area (UK) Apple service place
*besides* the Apple Cambridge BusinessCentre? Last time I dealt with them
it was a nightmare of the first order ...
Cheers,
Carl
Cheers,
Carl
--
Carl Edlund Anderson
Dept. of Anglo-Saxon, Norse, & Celtic
St. John's College, University of Cambridge
mailto:cea20@cus.cam.ac.uk
http://hea-www.harvard.edu/~carl/
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 107dd4,e3209a98b208b85f,start X-Google-Attributes: gid107dd4,public X-Google-Thread: f49e8,e3209a98b208b85f,start X-Google-Attributes: gidf49e8,public X-Google-Thread: 10b5a2,e3209a98b208b85f,start X-Google-Attributes: gid10b5a2,public X-Google-Thread: 11065a,e3209a98b208b85f,start X-Google-Attributes: gid11065a,public X-Google-Thread: f5142,e3209a98b208b85f,start X-Google-Attributes: gidf5142,public From: cea20@cus.cam.ac.uk (Carl Edlund Anderson) Subject: Dark line on PB 520c screen? Date: 1998/06/01 Message-ID: <cea20-ya02408000R0106981336480001@nntp-serv.cam.ac.uk> X-Deja-AN: 358428546 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=ISO-8859-1 Organization: University of Cambridge, England Mime-Version: 1.0 Newsgroups: comp.sys.mac.portables,comp.sys.mac.hardware.video,ucam.comp.mac,uk.comp.misc,demon.tech.mac