A technician is diagnosing several video display and projector issues across a corporate office. Match each observed symptom or scenario with its primary hardware or configuration root cause.
- An OLED laptop display exhibits faint, persistent outlines of a static application toolbar even after switching applications.Image burn-in (ghosting) caused by prolonged static element display on organic light-emitting diode material.
- A ceiling-mounted projector powers off unexpectedly after 15 minutes of operation, accompanied by a solid warning LED.Thermal shutdown caused by a clogged dust filter or restricted airflow causing internal overheating.
- A desktop monitor displays flickering horizontal line artifacts that are visible both on the physical screen and in software screenshots.Video RAM (VRAM) overheating or graphics processing unit failure producing frame buffer errors.
- A newly installed projector displays an image that is visibly wider at the top of the screen than at the bottom.Keystone distortion resulting from the projector lens not being perpendicular to the projection screen surface.
Answer
The correct pairings connect each display symptom directly to its underlying cause: 1) OLED static outlines match image burn-in on OLED materials. 2) Projector shutdown after 15 minutes matches thermal shutdown from clogged airflow/filters. 3) Line artifacts captured in screenshots match GPU/VRAM hardware rendering corruption. 4) Trapezoidal wide-top image matches keystone distortion from non-perpendicular alignment.
Each display anomaly corresponds to a specific hardware characteristic: OLED displays suffer burn-in from static UI elements; projectors execute thermal shutdowns when thermal vents or dust filters restrict airflow; GPU/VRAM hardware faults generate rendering artifacts recorded by screenshot tools; and non-perpendicular optical projection causes keystone trapezoidal distortion.
Step-by-Step Solution
Key Concept
Troubleshooting Video, Display, and Projector Physical Symptoms