  Jcarder, The LCD is part of the Control panel as shown below:  [IMAGE]  Before removing the control panel:   Using a #2 Phillips screwdriver, remove the screw(s) securing the control panel to the chassis [IMAGE]   From inside the system, push the front panel out of the chassis.   [IMAGE] Reseat all the cables connecting the control panel to the system board and replace the control panel. See link below for further guidance [URL]    
We did something that has apparently turned off the front panel LCD display and Power light - The server is up and running normally, just no lights in the front (except for the blinking HHDs).  And pressing any of the 3 panel buttons -- left arrow, select, or right arrow does not do anything. I have been trying to search the web, but can't quite get the right search string to help me find the answer...but I did encounter this bit that seems to make sense, unfortunately it doesn't say how to turn it back on. ...the LCD backlight will remain off if the LCD messaging is turned off; this can be done via the web-based graphical interface, IPMITOOL, Open Mange System Administrator, or a command line too such as RACADM. Anyone know how to turn this option back on?
PowerEdge R720 – Front LCD panel completely dark