The LCD touchscreen display is very light, blank, unreadable or broken ... Solution 1 : Unplug the power cable from the printer and the wall. Wait 10 minutes. Plug the printer back in directly to a wall outlet. Solution 2 : (for a blank screen) Unplug the power cord. Wait for 2 minutes Plug in the power cord and power on the printer Wait for the printer to enter ready mode Download and install the latest Firmware from HP.com for your model: http://www8.hp.com/us/en/support-search.html?tab=1 #/qryterm=officejet%20pro%208600e%20all%20in%20one ... Solution 3 : The product display is blank or black. Solution 4 : you have to replace the Display Control Panel. For HP Officejet 8600 series, the part number of the Display Control Panel is CM749-60021 : For HP Officejet 8500, 8500a series, the part number of the Display Control Panel is CM758-60006 :
Reset printers and cartridge. Printers problem solving,tips, tricks and tutorial.