Monitor convergence issues, particularly in CRT displays, can cause color fringing, blurry text, and distorted images. Here are the most effective solutions to prevent and fix these problems:

1. Regular Calibration: Use built-in or third-party tools to adjust color convergence settings, ensuring proper alignment of red, green, and blue beams.

2. Degaussing: CRT monitors benefit from periodic degaussing to eliminate magnetic interference that disrupts convergence.

3. Avoid Magnetic Sources: Keep speakers, power cables, and other electromagnetic devices away from the monitor to prevent interference.

4. Monitor Warm-Up: Allow older monitors to warm up for 10-15 minutes before critical use, as convergence can stabilize with temperature.

5. Physical Adjustments: Some monitors have manual convergence controls—carefully tweak these if automatic calibration fails.

For modern LCD/LED displays, convergence issues are rare but may stem from faulty cables or graphics settings. Check connections, update drivers, and reset display settings if needed. Regular maintenance and proper usage help extend monitor lifespan and image quality.