The answer is a burned-in LCD panel, which is the most likely cause of a projector ghost image with no input connected. This occurs because prolonged display of static content, such as a logo or menu, can permanently etch the image into the liquid crystal layer, leaving a faint, persistent shadow even when no source is active. On the CompTIA A+ Core 1 220-1201 exam, this scenario tests your ability to distinguish image burn-in from other projector failures, like a faulty bulb—which would cause dimness or no light, not a ghost. A common trap is to suspect the input cable or source device, but the key clue is that the ghost appears with no input at all. Remember: if the ghost lingers without a source, the panel is the source of the problem. For a quick memory tip, think “static etches the screen”—a stationary image over years leaves a permanent afterimage.
220-1101 Display Devices Practice Question
This 220-1201 practice question tests your understanding of display devices. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A technician is troubleshooting a projector that displays a faint, ghost-like image even when no input source is connected. The projector has been in use for several years. What is the most likely cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The LCD panel has image burn-in
This is a classic symptom of a burned-in image on an LCD projector panel. Over time, static images can permanently etch into the panel, causing a ghost image. This is different from a faulty bulb, which would cause dimness or no light.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
The projector bulb is nearing the end of its life
Why it's wrong here
A dying bulb causes dimness or a yellow tint, not a ghost image with no input.
✓
The LCD panel has image burn-in
Why this is correct
Prolonged display of static images can cause permanent burn-in on LCD panels, resulting in a ghost image.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The input cable is picking up interference
Why it's wrong here
Interference would cause noise or distortion, not a persistent ghost image when no cable is connected.
✗
The projector's lens is dirty
Why it's wrong here
A dirty lens would cause blurriness or spots, not a ghost image of a previous display.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 220-1201 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 220-1201 question in full detail.
Identify which 220-1201 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Display Devices — This question tests Display Devices — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The LCD panel has image burn-in — This is a classic symptom of a burned-in image on an LCD projector panel. Over time, static images can permanently etch into the panel, causing a ghost image. This is different from a faulty bulb, which would cause dimness or no light.
What should I do if I get this 220-1201 question wrong?
Identify which 220-1201 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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