Occasionally a clicking noise comes from the area of the circuit board behind the control panel when the oven is off. If you set the oven on a function, the clicking stops but sometimes {most of the time) will return when you clear the oven from perfoming the function. It will mysteriously stop. Turning the breaker off and leaving off for 5 minutes or so will often but not always clear the noise. I rarely notice it after oven use and it usually occurs when the oven is cold. I am getting ready to mount another oven above it and access to it is at a premium. now Thanks Shawn