GE Spacemaker xl1800 vent fan not working

Microwave Repair
1

I have a GE Spacemaker XL1800 and the vent fan does not work, does not turn on at all. Microwave and the rest of the unit works perfect. What is the likely best method of repair and is it a simple Do It Yourself repair or best to call a technician to accomplish. Part s, source for parts and install instructions on the repair would be very helpful

3

Any suggestions?

4

What is the complete model number of the microwave?

Does it make any noise?

Gene.