A field technician is evaluating four escalated helpdesk tickets regarding video displays and projectors across an enterprise network. Match each reported visual symptom to its underlying root cause or primary corrective action.
- Trapezoid-shaped image distortion where the top edge of a projected image is noticeably wider than the bottom edge following ceiling mount re-installation.Unaligned optical projection angle requiring digital or physical keystone correction.
- Persistent ghosting of a static application toolbar visible across the monitor regardless of the active input source or rebooting.Image retention or burn-in on the display panel matrix requiring pixel refresh conditioning.
- Horizontal split lines appearing across rendered frames when fast motion occurs in 3D graphics applications.Mismatch between GPU frame rendering rate and monitor refresh rate solvable by enabling display frame synchronization (V-Sync/G-Sync).
- Solid vertical color lines spanning across half the display panel that persist across all input cables, resolution settings, and Built-In Self-Test (BIST) screens.Permanent hardware damage to internal row/column driver circuitry or T-CON board requiring panel assembly replacement.
Cevap
Trapezoid projector image matches keystone correction; persistent static toolbar ghosting matches image retention/burn-in; horizontal split lines in 3D applications match frame rate/refresh rate mismatch resolved by frame synchronization; solid vertical lines on BIST screens match driver IC or T-CON board hardware failure.
Each display symptom uniquely maps to a distinct layer of the visual pipeline: projector mounting geometry leads to keystone distortion, static pixel degradation causes image retention, unsynchronized frame buffers cause tearing during motion, and hardware failure on internal diagnostic (BIST) patterns confirms internal T-CON/column driver hardware breakdown.
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Anahtar Kavram
Video, Display, and Projector Troubleshooting