Paula A Pensacola , FL July 13, 2015 Oven hood vent blower switch was inoperative (failed) I dismantled the entire hood unit, tested the fan motor, it worked thus I deduced that the on/off rheostat switch was bad. since it contained some resistors and other solid state components that I couldn't bench test I reasoned this was the logical failed part; a further clue was a bit of a burned or over heated area on the sw. circuit board. Ordered the part, installed it, it works as per original. all is well. very pleased with the experience as we got exactly what we needed and ordered. Regards, Robert from Pensacola Fla. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes