Dell SE2426H (DELL-SE2426H) service manual

Contents

1. Safety Instructionsp. 4

   Use the following safety guidelines to protect your monitor from potential damage and to ensure your personal safety. Unless otherwise noted, each procedure…

2. Before working inside your monitorp. 4

   Steps 1. Save and close all open files and exit all open applications. 2. Turn off your monitor. 3. Disconnect your monitor and all attached devices from their…

3. After working inside your monitorp. 4

   CAUTION: Leaving any loose or misplaced screws inside your monitor may severely damage it. Steps 1. Replace all screws and ensure that no stray screws remain…

4. Views of SE2426H monitorp. 5

   Views of SE2426H monitor

5. Front viewp. 5

   Figure 1. Front view of the monitor Table 1. Components and descriptions. Label Description Use 1 Function buttons To access the OSD menu and change the…

6. Back viewp. 6

   Figure 2. Back view without monitor stand Figure 3. Back view with monitor stand Table 2. Components and descriptions. Label Description Use 1 VESA mounting…

7. Side viewp. 7

   Figure 4. Side view of the monitor

8. Bottom viewp. 7

   Figure 5. Bottom view of the monitor Table 3. Components and descriptions. Label Description Use 1 Power port To connect the monitor power cable. 2 HDMI 1 port…

9. Major components of SE2426H monitorp. 8

   Figure 6. Major components Table 4. Components. Item Description Item Description 1 Stand riser 6 Power board 2 Stand base 7 Display panel 3 Back cover 8…

10. Wiring connectivity diagramp. 9

    Wiring connectivity diagram Figure 7. Wiring connectivity diagram Table 5. Cables. Item Description 1 Lightbar cable 2 Low-Voltage Differential Signaling…

11. Connecting the cablesp. 10

    WARNING: Before you begin any of the following procedures, follow the Safety Instructions. WARNING: For your safety, ensure that the grounded power outlet you…

12. Connecting HDMI cablep. 10

    Figure 8. Connecting HDMI cable

13. Connecting power cablep. 10

    Figure 9. Connecting power cable

14. Disassembly and reassemblyp. 11

    Disassembly and reassembly CAUTION: The information in this section is intended for authorized service technicians in the EMEA region. Dell prohibits users…

15. Recommended toolsp. 11

    The procedures in this document may require the following tools:  Phillips screwdriver #0  Phillips screwdriver #2  Plastic scribe

16. Screw listp. 11

    NOTE: When removing screws from a component, it is recommended to note the screw type, the quantity of screws, and then place them in a screw storage box. This…

17. Standp. 12

    Removing the stand Prerequisites 1. Follow the procedure in Before working inside your monitor. Steps 1. Place the monitor on a clean, flat surface on a soft…

18. Back coverp. 14

    Removing the back cover Prerequisites 1. Follow the procedure in Before working inside your monitor. 2. Remove the stand. Steps 1. Remove the two screws…

19. Chassis assemblyp. 16

    Removing the chassis assembly Prerequisites 1. Follow the procedure in Before working inside your monitor. 2. Remove the stand. 3. Remove the back cover. Steps…

20. Keypad boardp. 22

    Removing the keypad board Prerequisites 1. Follow the procedure in Before working inside your monitor. 2. Remove the stand. 3. Remove the back cover. 4. Remove…

21. Interface boardp. 24

    Removing the interface board Prerequisites 1. Follow the procedure in Before working inside your monitor. 2. Remove the stand. 3. Remove the back cover. 4.…

22. Power boardp. 28

    Removing the power board Prerequisites 1. Follow the procedure in Before working inside your monitor. 2. Remove the stand. 3. Remove the back cover. 4. Remove…

23. Troubleshootingp. 30

    WARNING: Before you begin any of the procedures in this section, follow the Safety Instructions

24. Self-testp. 30

    Your monitor provides a self-test feature that allows you to check if your monitor is functioning properly. If your monitor and computer are properly connected…

25. Built-in diagnosticsp. 31

    Your monitor has a built-in diagnostic tool that helps you determine if any screen abnormality you experience is an inherent problem with your monitor, or with…

26. Common problemsp. 32

    The following table provides general information about common monitor problems that you might encounter and the possible solutions: Table 7. Common problems…

27. Product-specific problemsp. 33

    Table 8. Product-specific problems and solutions. Specific symptoms Possible solutions The screen image is too small • Check the Aspect Ratio setting in the…

28. Contacting Dellp. 34

    To contact Dell for sales, technical support, or customer service issues, see Contact Support at Dell Support Site. NOTE: Availability varies by Country…

29. Revision Historyp. 35

    Revision History The following table provides the revision history of this document: Table 9. Revision history. Revision Date Description A00 December 2025…