Problem with Turboair Ponte cooker hood

I have recently moved into a new house and we need some spare parts for a Turboair Ponte cooker hood installed by the previous owners.

One of the filters was previously incorrectly installed so the housing was in contact with the lamp. This has melted the plastic housing damaging the filter and also damaging the lamp. The molten plastic has dripped down onto the inner surface of one of the grilles which separates the fan etc from the outside world.

Is it possible to get hold of these replacement parts and is it easy to install oneself or do people advise a professional installer?

Thanks

DB