The fan and turntable quit working

I was attempting to change the light on the bottom of my range mount microwave. The light bulb broke off in my hand and something popped. Now the fan and the turntable do not work. I still have power and the oven heats and the electronic controls appear to be working but the chamber fills with steam. I know there are fuses but don’t know where to start looking. I am pretty handy but now I am thinking it would be cheaper to replace the oven rather than pay a repairman. Suggestions please!

You may have blown a track on the pc board AP4065156 a bit pricey at $128
You might want to look at the pc board for damage.

I was hoping it something as simple as a fuse…