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Home > Archive > alt.certification.a-plus > July 2003 > Electricity Questions (does it really cause these sorts of problems?)
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Electricity Questions (does it really cause these sorts of problems?)
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| hvrty 2003-07-07, 11:23 pm |
| I know very little (nothing) about electricity. What I do know is
probably wrong.
I've been dealing with a vendor who likes to blame electrical issues
for system malfunctions, like freezing, crashing, and loss of network
connectivity. I've been fairly convinced that they're full of crap,
using this same excuse to explain why they can't fix problems occuring
in four locations spread across two states.
However, I find myself wanting to adopt this reasoning! A touchscreen
at one of my locations has stopped responding to touch. I've swapped
out the monitor/cables and reinstalled the drivers with no effect.
However, when I brought the PC to another location and plugged it in,
everything worked just fine.
This location is made up of two workstations, each consisting of a
computer, monitor, receipt printer, barcode scanner, pole display, and
credit card swiper. Today I had an employee power down one
workstation-- but the touchscreen on the other station still didn't
work. This set up had been working for a few months before dying.
Does it make any sense that the touchscreen (and sometimes the pole
display), would stop working because they aren't getting enough juice?
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| David Hough 2003-07-16, 10:24 am |
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I'm coming in on this a little late, but here goes. I've worked on POS
systems like this and the pole display thing sounds more like a
connecter issue.
As for as the touch screen goes, I've had the monitor screen image move
on me as much as a half inch, sometimes caused by someone hitting a
knob on the underside of the monitor. The touch screen usually has a
calibration proceedure to sync the screen image with the touch screen.
Every time you move these things you have to recalibrate, or else, you
touch the lighted spot on the screen, but the touchscreen is looking for
a touch in another spot, and doesn't respond.
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