Fred for Model Number KEHC309JSS05 The microwave just yesterday started making a very loud humming noise when in use. Does not matter if microwave or convection microwave. Seems to work but something is obviously wrong. About 3 years ago the magnetron was replaced, could it be this again?
Answer Hello Fred. You will need to check and see if the fan motor is bad and will need to be replaced on the unit. The fan motor can cause the unit to make a humming noise. Read More... Answered by AppliancePartsPros.com | Wednesday, June 3, 2015