Power Central

SGET 660 Hardware & Networking for Educators

[Objectives] [Requirements] [Assignments] [Syllabus] [Evaluation] [Web Resources 1] [Web Resources 2] [MSET]

Lightening affects your system even if it doesn't strike your building.
If the power utilities enter your house above ground, unplug any device you can't afford to lose.
Lightening arrestors can reduce the possibility of lightening damage.
Cheap lightening protection: overhand knots in the power cord.
Both power cords and phone cords are vulnerable.

Surge Suppressor: Deluxe models will include protection on all of its outlets, has an RJ11 modem/fax line, status indicators, and an insurance policy.

Next step up: A UPS - Universal Power Supply. UPSs are designed to protect your equipment from surges, spikes and dips. It has a built in battery that can sustain your computer during power dips and can protect it from large spikes.

Power Troubleshooting Tips

Is power coming from the wall? Plug something else in to confirm.
If you are using a power strip - is it turned on?
Check for loose connections from the power plug to the power supply or from the power supply to the motherboard.
In an AT system, confirm that the black wires of P8 and P9 are together and not at opposite ends.
In an ATX system, make sure the power switch on the power supply is on.
If the power supply has a voltage switch, make sure it is set for 110 (standard for U.S.).
If you are having other problems with the PC and suspect that it might be power related, check the following:
Are you outlets wired correctly?
Make sure there are no other high-wattage devices sharing the line.
Make sure your outlets are grounded and that all devices share the same ground.
Install equipment that can protect against surges and spikes.

Reference: PC Upgrade & Maintenance Guide 2003 Edition www.sybex.com p346 - 347

Last Update: 05/28/2005 10:03:21 PM.