Replaced the breaker, replaced battery cables(actually worked for a while),replaced every board on the machine at least once, replaced all sensors, replaced wiring harness. still have problems. Machine was down most of weekend. Mechanic rode it all day today, would pick one or two rounds, die and would not turn over, replaced more sensors, running right now(for about the last 4 hours) but have no confidence left in Deere or their great D-Tac and mechanics.