Neff double oven (Earley RG6)

Model U1644NOGB/01. Can be viewed on the Neff website. Top oven works but not the larger oven. LED display doesn’t work. I’m sure it’s fixable but Neff went through the motions of sending a service engineer out who promptly said it couldn’t be fixed. Shame because it was a good appliance. Offering to anyone who fancies their chances of getting it going again. Time limited offer as it needs to be gone by Monday