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Short Takes- 28 Dec. 1999
Charles W.
Moore
The Horror and Heartbreak of ESDOver the Christmas weekend, I watched a scary video. No,
it wasn't the latest horror thriller from Stephen King -- it
was an old Apple Technology & Troubleshooting library
tape entitled "ESD: The Shocking Truth." ESD stands for electrostatic discharge, and according to
the video, which features Steve Wozniak and David Cram, the
ESD hazard to your expensive computer chips is a lot more
worrisome than I had previously thought. Back when I first started tentatively poking around
inside computers, say to install some extra RAM, I went by
the book -- hooking myself up to a grounded wrist strap,
making sure to keep one hand touching the computer chassis
while I worked with the other one, and so on. However, as I
became more accustomed to working around computer guts, and
watched others who knew more than I did handling SIMMs and
boards with casual regard for ESD caution, I developed a
greater sense of security about the issue. According to the video, I was wrong. It is distinctly
unsettling to watch chips and transistors being fried simply
by being touched for an instant, or having a Styrofoam
coffee cup set down beside them. In one demo., Mr. Cram
damages a transistor by simply waving a sheet of plastic
film near it -- never even touching it. The damage is
verified onscreen using test equipment. Another false sense of security I had was the
conventional wisdom that if you work in an uncarpeted area,
you're relatively safe from static discharge problems.
Wrong! Antistatic spray on your work area is not the
solution either, and carpeted workbenches are a big no-no,
even if you liberally use antistatic spray. This video is obviously oriented toward scaring computer
tech people who may have developed lackadaisical attitudes
toward taking ESD precautions into adopting more responsible
work habits. While some of these people will doubtless
protest that they have been handling computer components in
a more casual manner for years and have not noticed any
problems, Mr. Cram emphasizes that ESD damage will often
just "wound" a chip circuit rather than killing it, leaving
it to eventually fail weeks or months later. The prescribed precautions for preventing ESD damage
include: - * Always wear a properly grounded wrist strap or heel
strap when handling circuit boards, cards, RAM modules,
chips, and other components containing
microprocessors
- * Work on a bench surface covered with a grounded
mat
- * Keep nonconductive plastic materials away from
ESD-vulnerable components
- * Store components in real, shielded antistatic bags,
and make sure that the bags are in good condition with no
pinholes or scuffs
I know I'm going to be a lot more cautious the next time
I open up a CPU. LCDtest Helps You Find Dead (Or
"Sleeping") PixelsMike Bailey's LCDtest
is a freeware diagnostic utility that helps you test your
LCD screen for bad or stuck pixels. Unfortunately, "dead"
pixels on an LCD computer screen are not an unusual
phenomenon. Each pixel in the LCD is actually made up of 3
transistors -- on each for red, green, and blue. With
thousands of pixels making up the screen and 3 transistors
per pixel, it isn't difficult to imagine how problems can
crop up. Using LCDtest is simplicity itself. Just start the
program and cycle through the 5 basic colors (black, red,
green, blue, and white), watching the screen to see if any
bad ones show up. Happily, the 12.1" TFT display on my Wall
Street PowerBook was free of any dead pixels. If you do happen to find a bad pixel, sometimes they are
not really dead but just having a nap. Mike suggests that
you gently "massage" it to try and wake it up. Sounds weird,
but reportedly it sometimes works. LCDtest Version 1.0.1 for the Mac, released last week,
now hides the cursor unless you use the command key to
display the menu bar. Tri-BACKUP 2 Backup SoftwareHere's another backup utility from Tri-Edre. Tri-BACKUP 2.01 offers several backup modes: - Mirror-Backup
- Incremental-Backup
- File Synchronization, multiple programs
I haven't tried Tri-BACKUP yet, but if you would like to
check it out, you can download a free, 30-day demo from then
Tri-Edre Website. The registration fee for Tri-BACKUP 2 is US$49. For more information, visit the
Tri-Edre site. 
Recent Miscellaneous RamblingsRecent Editorials at Low End Mac- Low End Mac gets
iReviewed, Dan Knight, Mac Musings, 5/24. "Apple 'iReviewed'
Low End Mac on May 22, 2000, noting it fills a unique niche and is
easy to search."
- A computer I understood, Cheryl
Hanna, My First Mac, 5/23. "Here was a computer that I understood
without translation."
- Software to make life
easier, Evan, Mac Happens, 5/23. Helpful software you may
never have heard of.
- Beta than nothing,
David Schultz, Virtuality, 5/23. Beta testing isn't for everyone.
David Schultz offers advice on preparing your Mac for the OS X
beta.
- Not raising the dead,
Manuel Mejia Jr, Mac Daniel, 5/22. Sometimes it doesn't make
economic sense to revive a dead Mac, but even in death their parts
can save others.
- What can you squeeze into a
compact Mac?, Adam Robert Guha, Apple Archive, 5/18. There's
still life in those little Macs.
- New @ Low End Mac:
Receive email information on new links.
BiographyCharles Moore has been a
freelance journalist since 1987 -- and writing for Mac web sites
since May 1998. His The
Road Warrior column is a regular feature on MacOS
Daily, and he is a news editor and columnist at Applelinks.com. Charles lives and works in Port Hilford, Nova Scotia, on the shore
of Indian Harbour Lake and in sight of the Atlantic Ocean. His
newspaper columns are syndicated across Canada, and he writes
regularly for several magazines, as well as doing Mac website
journalism. Charles has also contributed to MacToday magazine. His current stable of Macs includes a Mac
Plus, an LC 520, a Power
Mac 9500, a PowerBook 5300, and a
PowerBook G3 Series II/233.
 Macinstein
Banner ExchangeLow End
Mac begun April 7, 1997. Miscellaneous
Ramblings ©1999-2000 by Charles Moore. The remainder of the Low
End Mac site and all other subsites of <lowendmac.net>
copyright ©1997-2000 by Dan
Knight unless otherwise noted. All rights
reserved.
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