Hi JK,
Thank you for using the Support Forum. Please take a look at the solutions for display issues. Make sure that you have checked all these things and pay close attention to the steps for changing the display. If these steps do not help please consider contacting your support centre for further assistance.
Have a customer with a Xerox Phaser 4510, No Display, and when turn on fuser makes noise. I replace fuser had flat spot, Now sounds OK, I replace display, slight flash in display and hear a click seems in the lower front right. Also on the eithernet connection in back one lite on is the second lite suppose to blink ? This is my first post on this forum so be easy on me.