Following my discovery of wasp's nest this morning ,I went to cook dinner earlier and the casing around the fan/light switches which has cracked due to heat and a small part of which fell down yesterday ,came away and when I tried to switch the extractor fan on it sparked and blew a fuse, taking the downstairs socket circuit with it. Have somehow managed to sort out the power for the rest of the kitchen but obvisouly the cooker hood now doesn't work . Am thinking it is now a job for Mr Neff , having thought previously I could just order new switch casing and fit it myself. Ideas on cost anyone ?