The cooling fan has started to come on by itself i.e no knobs turned on.I replaced the oven thermostat a week ago and this worked fine,but this is happening now.Could it be the pcb? The model is a Stoves EC600 /059041917 and is about 17years old.The light behind the knobs comes on as well but goes off and on intermittently but the cooling fan keeps running.

Walter, March 2012