What precautions should I take when there is a thunderstorm?
When there is a thunderstorm,
all electronic devicesespecially computersshould be unplugged
to avoid damage from harmful power surges. Not only should all
power supply cords be unplugged, but also any telephone cables
that are connected to the computer. A "surge suppressor" can help reduce the risk of damage. Many new surge suppressors also have additional jacks to protect against power surges that
travel through the telephone line. However, while these surge suppressors add extra protection from power surges, the best protection
is had by unplugging all power supply cords and telephone cables.
How can a storm damage my
computer?
Whenever there is a thunderstorm,
it is possible that lightning, or an electrical power surge caused
by lightning, may damage one or more of your computer components
with excessive voltage. Modems are especially susceptible, because
a harmful power surge has two ways to reach the modemthrough
the electrical power grid and through the telephone line to which
the modem is connected.
How do I know if my modem
has been damaged? A telltale sign that a modem
has been damaged by a power surge is that the computer reports "no dial tone," even though the modem is properly connected
to a telephone line. The computer may also report that the modem
is "not responding." If other components have been damaged,
you may find that the computer will not operate at all. If any
of these symptoms occur soon after a thunderstorm, it is extremely
likely that one or more computer components have been damaged
by a power surge.
What can I do if my modem
has been damaged? If your modem, or some other
computer component, has been damaged by a power surge, the component(s)
may be repaired or replaced. It is often less expensive to replace
a modem than to try to repair it. Of course, before replacing
any computer components, it is best to have a qualified computer
technician diagnose the exact problem and determine whether or
not a modem or other component needs to be repaired or replaced.
For more information: If you have any questions or
comments, you may telephone MHTC toll-free by dialing 1-800-843-5827,
or send e-mail to
. The customer service staff at MHTC would be happy to help
you.
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