GE Fridge display is out no water or ice or lights

The fridge started intermittently dispensing water and ice about 3 weeks ago. I noticed that when I engage the lever for water or ice, the display would start showing ZEROS across the display and then flash all zeroes and sometimes would dispense if I waited long enough. Last week the display started flashing by itself without an contact and then went dead after a few days. I ordered and replaced the display assy with no change. Help me.