Have been getting a PF code for awhile. Washer still would operate. Noticed today that display was not lighting and troubleshot the power line. Bad connection in the box on the washer. Fixed the loose connection but still do not have any isplay. Have tried test cycle but will not work. There is power to the washer. So now it can be the door latch switch, control board or the console assembly. How do you test for each one short of just replacing willy nilly.