possibles,
A fuse box fault ,plug fault, fuse in plug blown,on/off switch
door interlock
check the plug socket outlet WORKS, use a kettle/hair dryer (to prove its got power to it,) if yes now test the plug fuse if no go to the fuse box in garage or cupboard the next thing needs to be tested with the POWER OFF using a meter or buzzer .the on/off switch should buzz in only one position (closed ) if using a ohms meter it should read 0 ohms in one position closed and infinite in the other with the switch open .the door catch is usually a replacement part
(some times a shorted heater elements BLOWS the fuse )
wirecutterman, July 2010
