I have the GE Profile Downdraft Vent System which pops up behind the stove. It is a separate unit from the stove. Problem is I cannot figure out how to dissassemble the SS cover part #7 from the snorkel body part #2.

I need to get to the flat black switgh as I think this is my problem. Unit was humming then nothing. Of course I cannot unplug as the outlet is behind the unit and cannot find a breaker so I have to turn the power off to the entire house.

Thanks for any advice.