Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove one end of the harness linking the Display PCB to the Main PCB (X51)
Measurement:
Measure the resistance of each wire in turn.
Refit the harness after testing, checking all the connections are lined up correctly and sound.
Refit the harness after testing, checking all the connections are lined up correctly and sound.
Isolate as per TOPs P4
and refit as necessary