Kyocera Mita KM5530

[Will]

Having intermitent problem with operation panel LCD dropping out and going blank. Comes back on and displays perfectly fine for 10-15 minutes and then goes blank again. Have tried pulling everything apart and reseating ribbon cable, and wire harness. Checked intensity dial. Not sure what to replace the LCD or the L shaped board with intensity control??

[blackcat4866]

I don't know this model, but...

This sounds like a failing fluorescent backlight or inverter. If I am correct, the touch screen is still operational when it isn't readable. Also if you look at the screen at an oblique angle you should be able to the screen image (just not backlit).

[10871087]

Does it work when its blank, can you press where a soft key would be and get something to happen?
I have seen the LCD panel fail a few times but never intermittently as you described. It would still replace it first.