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Difficulty: EasyVideo, Display, and Projector Issues

A technician is troubleshooting a ceiling-mounted projector in a conference room. The presenter reports that after running for approximately 15 minutes, the projector unexpectedly powers off by itself. Additionally, the projected image displays a strong yellow color tint across all content. Which of the following actions should the technician take to resolve these symptoms? (Select TWO.)

  1. Inspect and clean or replace the projector intake air filter.Answer
  2. Inspect, reseat, or replace the video signal cable.Answer
  3. C
    Replace the internal display panel backlight inverter board.
  4. D
    Update the host computer graphics adapter drivers to resolve thermal overheating.

Answer

The technician should inspect and clean or replace the projector intake air filter, as well as inspect, reseat, or replace the video signal cable.
Addressing a clogged air filter restores internal cooling, resolving thermal shutdown issues. Concurrently, reseating or replacing the video signal cable fixes missing pin contacts that cause color tinting such as a yellow cast.

Step-by-Step Solution

1
Diagnose the thermal shutdown symptom.
The 15-minute operational limit followed by power-off indicates thermal protection shutdown caused by reduced cooling efficiency.
Blockages in dust filters restrict airflow, causing internal temperatures to exceed safety thresholds.
2
Diagnose the color tint symptom.
A uniform yellow tint signifies a loss of the blue signal component along the video transmission path.
Bent cable pins, loose connections, or broken conductors fail to transmit the full color signal.
3
Select corrective maintenance steps.
Clearing airflow pathways and securing signal cabling directly addresses both root causes.
These physical interventions target the hardware mechanisms failing in the projector system.

Key Concept

Projector Thermal Protection and Signal Cable Artifacts
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Topics

Video, Display, and Projector Issues

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