Blurred or unclear fonts on the LED Monitor may be caused by a variety of reasons. Here are some common problems and corresponding solutions:

1. Improper resolution setting: Make sure the resolution of the LCD monitor or LED monitor matches the output resolution of the signal source (such as a computer, media player, etc.). Incorrect resolution will cause blurred images and text. Check the display settings of the device and adjust to the optimal resolution recommended by the display.

2. Refresh rate problem: Too low refresh rate may cause flickering or rolling stripes on the screen, indirectly affecting the clarity of the text. Check and adjust the refresh rate of the display appropriately.

3. Screen brightness and contrast: Improper brightness and contrast settings can also lead to poor display effects. Try to adjust the brightness and contrast of the display to an appropriate level to improve the readability of the text.

4. Connection cable problems: Using poor quality or damaged video cables may introduce interference and affect the display quality. Check all connection cables to ensure that they are intact and consider replacing them with high-quality cables.

5. Hardware failure: Damage to certain components inside the display, such as the driver IC, LED lamp beads, etc., may also cause display problems. This situation usually requires professional inspection and repair.

6. Focus adjustment: For some adjustable focus LED modules, make sure the focus is adjusted correctly so that text and images can be presented clearly.

7. Software or firmware update: Sometimes, outdated software or firmware versions of the display may also cause compatibility issues. Check the manufacturer's official website to see if there are any software or firmware updates available and follow the instructions to upgrade.

8. Environmental factors: Strong external direct or reflected light may also affect the viewing effect. Try to adjust the position of the display or use shading measures to reduce the impact of ambient light.