What caused the panel to become burnt? Was it a fult on the panel or something else that will burn any repair?
Which PCB is it? I believe there are two:
http://www.espares.co.uk/search/mo863329pt1979/fridges-and-freezers/pcbs-and-modules/hotpoint/ff200ea
Note that the spares linked to, the big PCB does not include the EPROM, which you will need to transfer (Assuming it hasn't fried)
acp, March 2017