This is a Duet 2 WIFI Ver 3.5.3 System with a Duex2 expansion board that has worked for years. In the middle of a print the machine just locked up and after that point the machine starts fine but as soon as you try to home or move any motor it give me drive(x) warning: phase A may be disconnected, phase B may be disconnected. Vin is 24 vdc steady all fuses are good. Its seems unlikely that one bad motor or wire issue would cause all drivers to report bad. No clue what to do next,