220-1201 Practice Question: A user says their monitor suddenly turned off and…

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✗

  Replace the monitor's internal power supply

  Why it's wrong here

  Replacing an internal power supply is a complex, invasive, and potentially costly repair that should only be attempted after simpler, external power troubleshooting steps have been exhausted. Before considering internal component replacement, technicians must first verify the integrity of the external power cable, the power outlet, and any surge protectors or UPS devices. Without confirming that external power is reaching the monitor, assuming an internal component failure is an inefficient and potentially unnecessary diagnostic step.

• ✓

  Test the power outlet with a known-working device

  Why this is correct

  Testing the power outlet with a known-working device, such as a lamp or a phone charger, is the most logical and efficient initial troubleshooting step when a monitor suddenly loses power. This action quickly verifies if the electrical outlet itself is supplying power, ruling out a tripped circuit breaker, a faulty outlet, or a loose wall connection as the root cause. It adheres to the "check the simplest things first" methodology, preventing unnecessary deeper diagnostics.

• ✗

  Reseat the video cable connecting the monitor to the PC

  Why it's wrong here

  Reseating the video cable addresses potential issues with the display signal transmission, such as a loose connection causing a "no signal" message or a distorted image. However, when a monitor suddenly "turned off" and exhibits no power LED activity, it indicates a complete loss of power to the device, not merely a lack of video input. Therefore, this action would not resolve the fundamental power delivery problem.

• ✗

  Replace the monitor with a new one

  Why it's wrong here

  Replacing the entire monitor with a new unit is a significant financial investment and should only be considered as a final troubleshooting step after all other diagnostic avenues have been thoroughly explored and exhausted. Premature replacement bypasses fundamental troubleshooting principles, potentially incurring unnecessary costs if the issue lies with an external power source, a faulty cable, or a simple configuration setting. Effective troubleshooting aims to identify and rectify the specific fault, not merely replace the entire component.

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