The door was opened during a cycle followed by a bang and the MCB & RCD tripped. An electronic burnt smell remained. Plug top fuse was ok and restored MCB and RCD successfully. Now the machine is constantly filling and exiting via drain hose continually. Drain pump operates intermittently as well. I cannot reset it and spray arms heater not operating. I cannot see any damabe to control board, wiring loom or scorch marks underneath. Any ideas what needs replacing?