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Summary of Contents for Dell SE2725HM
- Page 1 Dell 27 Monitor SE2725HM Simplified Service Manual Model: SE2725HM Regulatory Model: SE2725HMc March 2025 Rev. A00...
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Page 2: Notes, Cautions, And Warnings
A WARNING indicates a potential for property damage, personal injury, or death. Copyright © 2025 Dell Inc. or its subsidiaries. All rights reserved. Dell Technologies, Dell, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of their respective owners. -
Page 3: Table Of Contents
Major components of SE2725HM monitor ........ - Page 4 Steps ....................23 Installing the keypad board .
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Page 5: Safety Instructions
Safety Instructions Use the following safety guidelines to protect your monitor from potential damage and to ensure your personal safety. Unless otherwise noted, each procedure included in this document assumes that you have read the safety information that shipped with your monitor. NOTE: Before using the monitor, read the safety information that is shipped with your monitor and printed on the product. -
Page 6: Views Of Se2725Hm Monitor
Views of SE2725HM Monitor Front view Front view of the monitor Figure 1. Front view descriptions. Table 1. Label Description Function buttons To access the on-screen display (OSD) menu and change the settings if required. Power button (with LED indicator) To turn the monitor on or off. -
Page 7: Back View
Stand release button Releases the stand from the monitor. See this label if you must contact Dell for technical support. The Regulatory label (including MyDell QR Service Tag is a unique alphanumeric identifier that enables Dell service code, serial number, and Service Tag label) technicians to identify the hardware components in your monitor and access warranty information. -
Page 8: Bottom View
Bottom view Bottom view of the monitor Figure 4. Bottom view and descriptions. Table 4. Label Description Security-lock slot Secure your monitor using a security lock (purchased separately) to (based on Kensington Security Slot) prevent unauthorized movement of your monitor. Power port Connect the power cable HDMI port... -
Page 9: Major Components Of Se2725Hm Monitor
Major components of SE2725HM monitor Major components of SE2725HM Figure 5. - Page 10 Middle frame Keypad board NOTE: For replacement of power cord, connectivity cable and external power supply (if applicable), contact Dell: Go to https://www.dell.com/support. 2. Verify your country or region in the Choose A Country/Region drop-down menu at the bottom-right corner of the page.
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Page 11: Wiring Connectivity Diagram
Wiring connectivity diagram Wiring connectivity diagram Figure 6. Wiring connectivity description Table 6. Item Description Lightbar cable Low-Voltage Differential Signaling (LVDS) cable Keypad cable... -
Page 12: Connecting The Cables
Dell monitors are designed to work optimally with the video cables that are shipped with your monitor. Dell cannot guarantee the video performance of cables that are not included with your Dell monitor, as it has no control over suppliers, materials, connectors, and manufacturing processes. -
Page 13: Disassembly And Reassembly
Disassembly and reassembly CAUTION: The information in this section is intended for authorized service technicians in the EMEA region. Dell prohibits users from disassembling the monitor, and any damage caused by unauthorized servicing will not be covered under the warranty. -
Page 14: Removing The Stand
Removing the stand Prerequisites Follow the procedure in Before working inside your monitor. Removing the stand Figure 9. Steps Place the monitor on a soft cloth at the edge of a flat surface. Using a screwdriver press the release button. While keeping the release button pressed, pull the stand assembly out from the monitor. -
Page 15: Installing The Stand
Installing the stand Prerequisites Follow the procedure in Before working inside your monitor. Installing the stand Figure 10. Steps Insert the stand riser into the stand base until it clicks into place. Slide the tabs on the stand assembly into the slots on the monitor and press the stand assembly down to snap it into place. Next steps Follow the procedure in After working inside your... -
Page 16: Removing The Back Cover
Removing the back cover Prerequisites Follow the procedure in Before working inside your monitor. Remove the stand. Removing the back cover Figure 11. Steps Remove the four screws (M4x10) and the two screws (M3x4) that secure the back cover to the chassis assembly. Using the plastic scribe, pry the back cover starting from the bottom edge of the monitor. -
Page 17: Installing The Back Cover
Installing the back cover Prerequisites Follow the procedure in Before working inside your monitor. Installing the back cover Figure 12. Steps Align the back cover with the chassis and snap it into place. Ensure the screw holes on the back cover align with those on the chassis before applying slight pressure. NOTE: Replace the four screws (M4x10) and the two screws (M3x4) to secure the back cover to thechassis assembly.. -
Page 18: Removing The Middle Frame
Removing the middle frame Prerequisites Follow the procedure in Before working inside your monitor. Remove the stand. Remove the back cover. Removing the middle frame Figure 13. Steps Remove the 13 screws (M3x4) that secure the middle frame to the display panel. Remove the screw (M3x5) that secures the metal shield to the display panel. -
Page 19: Installing The Middle Frame
Installing the middle frame Prerequisites Follow the procedure in Before working inside your monitor. Installing the middle frame Figure 14. Steps Align the screw holes on the middle frame with those on the display panel. Replace the 13 screws (M3x4) that secure the middle frame to the display panel. Replace the screw (M3x5) that secures the metal shield to the display panel. -
Page 20: Removing The Metal Shield
Removing the metal shield Prerequisites Follow the procedure in Before working inside your monitor. Remove the stand. Remove the back cover. Remove the middle frame. Removing the metal shield Figure 15. -
Page 21: Steps
Removing the metal shield Figure 16. Steps Peel the four tapes from the metal shield. Disconnect the lightbar cable, LVDS cable, and keypad cable from the connector on the panel and the system board . Remove the two screws (M3x2.5) and two screws (M3x4) that secure the metal shield to the panel. Remove the two screws (4-40unc) that secure the VGA port to the metal shield. -
Page 22: Installing The Metal Shield
Installing the metal shield Prerequisites Follow the procedure in Before working inside your monitor. Installing the metal shield Figure 17. -
Page 23: Steps
Installing the metal shield Figure 18. Steps Align the screw holes on the metal shield with those on the display panel. Replace the two screws (M3x2.5) and two screws (M3x4) that secure the metal shield to the panel. Replace the two screws (4-40unc) that secure the VGA port to the metal shield. Connect lightbar cable, LVDS cable, and keypad cable to the connector on the panel and system board . -
Page 24: Removing The Keypad Board
Removing the keypad board Prerequisites Follow the procedure in Before working inside your monitor. Remove the stand. Remove the back cover. Remove the middle frame. Removing the keypad board Figure 19. Steps Remove the three screws (M2x2) that secure the keypad board to the middle frame. Lift the keypad board away from the middle frame. -
Page 25: Installing The Keypad Board
Installing the keypad board Prerequisites Follow the procedure in Before working inside your monitor. Installing the keypad board Figure 20. Steps Connect keypad cable to the connector on the keypad board. Replace the three screws (M2x2) that secure the keypad board to the middle frame. -
Page 26: Next Steps
Next steps Install the middle frame. Install the back cover. Install the stand. Follow the procedure in After working inside your monitor. -
Page 27: Removing The System Board And Power Board
Removing the system board and power board Prerequisites Follow the procedure in Before working inside your monitor. Remove the stand. Remove the back cover. Remove the middle frame. Remove the metal shield. Removing the system board and power board Figure 21. -
Page 28: Steps
Removing the system board and power board Figure 22. Steps Peel off the mylar tape from the power board. Remove the screw (M3x7) that secures the system board to the chassis. Remove the two screws (M3x7) and one screw (M4x8) that secures the power board to the chassis. Disconnect the two power cables from the connectors on system board and the power board. -
Page 29: Prerequisites
Installing the system board and power board Prerequisites Follow the procedure in Before working inside your monitor. Installing the system board and power board Figure 23. -
Page 30: Installing The System Board And Power Board
Installing the system board and power board Figure 24. Steps Connect the two power cables to the connectors on system board and the power board. Replace the screw (M3x7) on the power board to the chassis. Replace the two screws (M3x7) and one screw (M4x8) that secure the power board to the chassis. Adhere the mylar tape to the power board. -
Page 31: Troubleshooting
If the monitor is working correctly, it detects that there is no signal and one of the following messages appears. While in self-test mode, the power LED remains white. Dell 27 Monitor - SE2725HM No VGA Cable The display will go into Standby mode in 4 minutes. -
Page 32: Onboard Diagnostics
2. Unplug the video cables from the back of the computer or monitor. The monitor then goes into the self-test mode. 3. Press and hold the Exit button (button 4) for four seconds to enter the OSD lock/unlock menu. Dell 27 Monitor - SE2725HM Select option: The message of locking the control buttons Figure 28. -
Page 33: Common Problems
Missing pixels Cycle power On-Off. A pixel that is permanently Off is a natural defect that can occur in LCD technology. For more information about Dell Monitor Quality and Pixel Policy, see Dell Support site at: Dell Display Pixel Guidelines. -
Page 34: Product-Specific Problems
Check for bent or broken pins in the video cable connector. Restart the computer in the safe mode. Safety-related issues Do not perform any troubleshooting steps. Contact Dell immediately. Intermittent problems Ensure that the video cable connecting the monitor to the computer is connected properly and is secure. -
Page 35: Contacting Dell
Contacting Dell To contact Dell for sales, technical support, or customer service issues, see Contact Support at Dell Support Site. NOTE: Availability varies by country, region, or product, and some services may not be available in your country. NOTE: If you do not have an active Internet connection, you can find contact information about your purchase invoice, packing...
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