-I checked for possible solutions in the manual
- I looked on the web
- I disassembled the hood and took all the screws out to check for blown fuses and checked the wiring with my electrical screwdriver
- I couldn't work out why there was no electricity going to the thing at all.
- I thought maybe my screwdriver electrical detector thing was broken so I experimented, and managed to explode it. Now I need a new screwdriver.
Finally, I took everything out of the cupboards. And found the sodding switch right at the back of one of them, that had got turned off through inappropriate positioning of the tomato ketchup.