OBSERVATION REMOVE CONNECTORS FROM PCB

Isolate Mains Power to appliance as per TOPs P4

Remove connectors X20 (red) X2 (blue) and X22 from
the PCB and make safe

WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure

Mains Power On

Does the display illuminate?

X20

X22

Note:
If display illuminates do NOT refit connectors at this point.