Electrical Safety Precautions Working on a computer


Electrical Safety Precautions

Hello Everybody,

Today we are discuss electrical safety precautions working on a computer. So, Working on a computer can be safe and enjoyable if you protect yourself from electrical hazards by using some common sense and by taking appropriate precautions.


To protect yourself against electrical hazards, consider the following guidelines:

1) Perform only the work for which you have sufficient training.
2) Do not attempt repair work when you are tired; you may make careless mistakes, and your primary diagnostic tool, deductive reasoning, will not be operating at full capacity.
3) Do not assume anything without checking it out for yourself.
4) Do not wear jewelry or other articles that could accidentally contact circuitry and conduct current.
5) Wear rubber-soled shoes to insulate yourself from ground.
6) Suspend work during an electrical storm.
7) Do not handle electrical equipment when your hands or feet are wet or when you are standing on a wet surface. Perform as many tests as possible with the power off.

8) Prevent static electricity from damaging components by standing on a totally insulated rubber mat to increase the resistance of the path to ground. In some cases, workstations are located in areas with grounded floors and workbenches, so static electricity has a low-resistance, non-destructive path to ground.
9) When removing circuit boards, place them on a dissipative ground mat or put them in an anti-static bag.
10) Use an anti-static wrist strap when handling static-sensitive components such as system boards, sound cards, and memory chips.
11) After cleaning the keyboard, be completely sure it is dry before powering it up.
12) Label wires and connectors as you detach them, and make sure you plug them back into the proper sockets in the proper order.
13) When you replace the computer’s case, make sure all the wires are inside. The case may have sharp edges that can cut through exposed cables.
14) Power supplies have a high voltage in them any time the computer is plugged in, even if the computer power is turned off. Before you start working inside the computer case, disconnect the power cord and press the power button to dissipate any remaining power in the system circuitry. Leave the power off until you are done servicing the system unit.
15) Never stick anything into the power supply fan to get it to rotate. This approach does not work, and it is dangerous.
16) Do not take the case off a monitor. The risk to your life is not worth any repairs you might make.
17) Do not bang on the monitor screen with your tools; an implosion will propel shards of glass in every direction.
18) To clean the monitor, turn it off and unplug it; do not wear an anti-static wrist strap. Use isopropyl alcohol rather than a general-purpose cleaner; it does not create a safety hazard if small amounts are dripped inside the case, as it will evaporate rapidly. Use an anti-static cleaner to clean the glass on the monitor.


When working on high-voltage components, being grounded can be a potentially fatal risk. The path to  ground allows high-voltage electricity to flow through the human body, which can hurt or even kill the person involved. If there is a chance of coming in contact with a high-voltage source, the technician is best advised to insulate him or herself from ground by wearing rubber-soled shoes or standing on a rubber mat, and avoiding contact with any other grounded mass.

———————– Thanks Everyone



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