A computer system uses a large CRT. The display is experiencing display issues around the edges. The technician suspects something in the computing environment is causing the problem. Which of the…

The correct answer is A. Unshielded speakers. CRT (Cathode Ray Tube) monitors steer the electron beam using magnetic deflection coils. Unshielded speakers contain powerful permanent magnets that generate stray magnetic fields. When placed near a CRT, these fields interfere with the electron beam path, producing distortion…

Hardware and network troubleshooting

Question

A computer system uses a large CRT. The display is experiencing display issues around the edges. The technician suspects something in the computing environment is causing the problem. Which of the following should MOST likely be moved to reduce the issue?

Options

AUnshielded speakers
BWireless directional antennas
CWireless access points
DHigh speed laser printers

How the community answered

(32 responses)

A
78% (25)
B
13% (4)
C
6% (2)
D
3% (1)

Explanation

CRT (Cathode Ray Tube) monitors steer the electron beam using magnetic deflection coils. Unshielded speakers contain powerful permanent magnets that generate stray magnetic fields. When placed near a CRT, these fields interfere with the electron beam path, producing distortion, color fringing, or geometric warping - especially at the edges closest to the speakers. Shielded speakers are specifically designed with a secondary magnet to cancel this external field. Wireless antennas and access points emit RF energy, which does not affect CRT magnetic deflection. Laser printers produce heat and ozone but not the sustained magnetic fields needed to distort a CRT image.

Topics

#CRT monitor#magnetic interference#unshielded speakers#display issues

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