On my PA on the left side of the oven door, I have a switch , up is microwave, down is washer/dryer.
Be warned that a previous owner labeled the switch, if someone did not label yours it will be a white switch box. .
This is how I discovered the problem of no pwr to microwave.
Hope this helps.
Bilgerat: Chuck, Kassie, Freddie, Lady, Smokey, Merlin
2000 Pace Arrow Vision 36', V-10, Banks, Onan 5500, Blue Ox, 2014 Forester, SKP 130599, FT'ing 5+Yrs.