Replacing the Hub Board on CommBox Gen 2 LED Board

Applies To
CommBox LED Board Gen 2 Elite & Ultra Series (120”, 138”, 150”, 165”, 180” models)

Step-by-Step Instructions

1. Identify the Faulty Cabinet

   • Inspect the display for abnormal sections such as black areas or persistent image errors.

   • Locate the cabinet containing the issue by referencing calibration numbers or visually checking.

2. Remove LED Modules from the Cabinet

   • Use the front maintenance magnetic or suction tool to remove all LED modules from the faulty cabinet.

   • Set modules aside carefully to avoid damage.

3. Disconnect Power and Signal Cables

   • Unplug the power cable and the FFC (Flat Flexible Cable) from the faulty cabinet for safety.

4. Remove the Hub Board

   • Unscrew the 10 screws securing the hub board to the cabinet.

   • Carefully lift and remove the faulty 3-in-1 hub board.

5. Install the New Hub Board

   • Place the new hub board into the cabinet, aligning it correctly with mounting holes and connectors.

   • Secure it with the 10 screws removed earlier.

6. Reconnect Cables

   • Reconnect the power cable and signal FFC cable firmly to the new hub board.

7. Reinstall LED Modules

   • Align and gently press each LED module back into its original position, matching calibration numbers for uniform brightness and colour consistency.

8. Test the Screen

   • Power on the screen; verify that the display area previously showing issues now displays normally.

Troubleshooting / What to Do If It Doesn’t Work

• Screen Section Still Not Displaying Correctly: Double-check hub board connections and ensure cables are seated securely.

• Modules Not Lighting Up After Replacement: Confirm proper orientation of LED modules; reseat if necessary.

• Persistent Errors or No Improvement: Consider replacing signal cables or contact support.

• If problems persist, log a ticket on the Support Portal.