100-140 Question 54
Select 4While working on replacing the power supply in a desktop computer, a technician notices that the area around the power supply feels warm and the device was recently powered off. Which safety precautions should the technician follow to ensure personal safety and avoid damage to the equipment?
- A
Allow the power supply to cool completely before attempting any repairs.
- B
Wear an anti-static wrist strap connected to the computer chassis during the repair.
- C
Inspect the area for any signs of a fire hazard, such as burnt components or a strange smell.
- D
Keep the computer plugged in to ensure it is grounded during the repair.
- E
Use insulated tools when working near electrical components.
Show answer and explanation
Correct answers: A, B, C, E
Explanation
When working with electrical components such as a power supply, it is critical to prioritize personal safety by allowing components to cool and using insulated tools to prevent electrical shock. Additionally, ESD prevention measures, such as wearing an anti-static wrist strap, protect the equipment from damage. Inspecting for fire hazards ensures the work environment is safe for repairs. Always unplug the device to eliminate the risk of electrical shock.
- A. Correct.
Allowing the power supply to cool completely helps avoid potential burns and ensures the components are safe to handle.
- B. Correct.
Wearing an anti-static wrist strap prevents electrostatic discharge (ESD), which can damage sensitive electronic components.
- C. Correct.
Inspecting for fire hazards ensures that no further risks are present before proceeding with the repair.
- D. Incorrect.
Keeping the computer plugged in is unsafe and increases the risk of electrical shock. Always unplug the device before working on it.
- E. Correct.
Using insulated tools reduces the risk of electrical shock when working near live or recently powered components.