The control panel on the HP Officejet Pro 8600 plus may have touchscreen issues or display problems. This guide describes how to replace the control panel.
Lift the scanner lid to a resting position.
Wedge the plastic opening tool into each of the three plugs to pry them from the control panel hinge located above the control panel screen.
Remove the three 10mm-T10 Torx screws.
Disconnect the control panel from the hinge by gently lifting upward, then outward towards you.
Detach the control panel from the black plastic latch by gently lifting upward, then outward towards you.
Turn over the control panel, making the screen face downwards.
Place two fingers on the rectangular, plastic wire cover and squeeze inward. Slide the cover downward, away from the cables, until the cover is fully removed.
Disconnect the two ribbon cables from the panel by pulling them upward out of their ports.