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Sherlock Ohms

Computer Shuts Down Unless You're Wearing Leather

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Elizabeth M
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Blogger
Tricky problem
Elizabeth M   1/16/2013 7:14:56 AM
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Wow, interesting problem to have! The first thought I had when I saw the headline was, "So, if you're in the Hell's Angels, you can use this particular computer?" Clever sleuthing on this one to figure out the problem!

Ann R. Thryft
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Blogger
Re: Tricky problem
Ann R. Thryft   1/16/2013 12:14:43 PM
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I, too, had the wrong idea about the role of leather here, but it was more fashion-forward than what the Hell's Angels wear :)

EricMJones
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Gold
Women Detector
EricMJones   1/17/2013 9:49:02 AM
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Years ago an IBM typewriter field technician (so you KNOW it was years ago!), kept getting calls from an office where one machine seemed to malfuctioning. But when he tested it it worked fine. He even swapped out the machine, but still the one at a particular desk always seemed to malfunction.

So on one call, the secretary (so you KNOW it was years ago!). Showed him how it malfunctioned. She turned it on, put in a piece of paper, and the typewriter went into fits as her  extremely full bosom rested on the typewriter keyboard.

charlessouthward
User Rank
Iron
Ground Strap
charlessouthward   1/17/2013 1:47:12 PM
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My father was a shoe repairman in the San Diego area. He routinely added a braided ground strap to nurses shoes. They were required for individuals working in high oxygen areas to prevent sparks from igniting a fire.

He would simply take a flat braided wire and punch it through the sole and lay about a 1 inch length inside the shoe and outside the shoe and anchor the ends wth a flat rivet.

Cabe Atwell
User Rank
Blogger
Re: Ground Strap
Cabe Atwell   1/17/2013 3:38:46 PM
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My immediate reaction when I started reading the post was "it's a ground issue." Then the end... boom, validated.

I like the idea of another way to turn off a computer, put on shoes.

C

Critic
User Rank
Platinum
Word Usage
Critic   1/21/2013 9:45:22 AM
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Role, not roll.

GlennA
User Rank
Gold
watch where you walk
GlennA   1/22/2013 10:01:49 PM
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A secretary at a company I worked for several years ago would tell people not to walk by on the left side of her desk.  One day it was me.  When I asked why, she told me her computer would shut down.  Not believing her, I asked her to save her work so that I could see if it was true.  When I walked past on the left side of her desk, the computer did shut down.  I checked to see why, and found an extension cord ran on that side, and the cord was losing connection with the receptacle.

Scott Orlosky
User Rank
Platinum
Re: Ground Strap
Scott Orlosky   1/26/2013 11:33:00 PM
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Cabe - I had the same thought.  Ground problems manifest in interesting ways.  I once spent days chasing an ungrounded pin on an IC that produced a slight capacitive load with an 18 hour time constant that caused the output to exhibit a slight jump.  If you need a ground - make sure it is a solid ground!

Walter
User Rank
Silver
Re: Ground Strap
Walter   2/4/2013 4:26:03 PM
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I was having a look at safety boots at our local work clothing store.  apparently there are various specialties including high voltage insulated for electricians and anti-static for electronics techs.  I asked if I could a combination of both.  It took the guy about ten seconds to say no, that wasn't possible.

 

mr_bandit
User Rank
Iron
Other problems with clothes and computers
mr_bandit   2/4/2013 6:29:43 PM
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Jerry Weinberg (of IBM and "Psyc of Computer Programming" fame) tells a couple of stories:

The first one had to do with women operators having a high failure rate with early IBM mainframes. Remember, these were in carefully controlled computer rooms.

Turns out, the dress code required the women to wear wool skirts and nylon hose. The keyboards would happily conduct those big static charges right to the input boards. The dress code was changed && IBM later beefed up the static protection.

The other one was really weird. The mainframes would overheat in a random manner. Much wailing and nashing of teeth, because the AC and room design was IBM standard. Jerry gets sent to investigate. The operators were nuns, wearing full habits. He noticed a couple standing over the floor grates, then the system overheat warning going off. The nuns were just trying to get cool, but the full skirts were altering the airflow enough.

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