Abstract: Over for the burn-in of integrated circuits (12), comprising: a chamber (B) for receiving such circuits (12); first means (4), for heating such integrated circuits (12) in the chamber (B) with the circuits (12) fed with supply voltages; and control means for controlling the first means (4), including a computer (15) for monitoring power consumed by the circuits (12), the computer (15) being capable of storing information concerning the number of said circuits (12) and being adapted to provide from said power, a signal dependent on the mean power dissipation of the circuits (12): and in which oven the control means controls the heating of the circuits (12) in dependence on said signal.