[villagetinker]

Originally Posted by JohnnyP

Thanks villagetinker, you always have constructive, and valuable, comments.

In this case, the vent control panel is actually a complete circuit board, with multiple slide switches, and a rheostat to vary the vent fan speed. The control panel is fastened with screws somewhere up, and inside the unit. This would be a "blind" screw removal, if the screws are not already rusted into place. Quality replacement parts, from eraplacementparts.com, include the control panel circuit board for $412 and the plastic switch bezel for $145. With a 21-year old unit, the motor will also eventually wear out, so I might as well take the $562 (cost of switch parts) and replace the entire range hood.

In your case I completely agree with your analysis, the others I worked on were 2 speed motors and 'old school' hard wired on/off switches.