While # 3 hoist operator was doing a full test trip, the load cell system failed to work. GL Tiley was called as well as MSHA. After investigation, GL Tiley raised the set point of the system up to 7,800 lbs and achieved the load cell fault every time. #3 was back up and running at 12:52am (3/9/17). No evacuation because no one was in the mine at the time of this incident.