Kenmore 59933 Range Hood

Q: I need to trouble shoot the fact that none of the lightswitchs or the motor switch work. I have checked all the outlets for ground fault shutoff. I have checked the circuit box and all the circuits are activated. I changed both light bulbs. I'm wondering if ther might be a fuse, but I ca can't see evidence of one. The range lights are on. I can't quite believe that the fan motor and both lights are somehow faulty at the same time. The hood is 8 yrs. old and worked just fine until I installed a dimmer switch on the light over the dining table about 20 feet away. Reply