Just turn it off. The moment power is removed there is no longer a source of heat for the = fan to help dissipate, so the heat sink won't get any hotter than it already = is. Ron AC7AC K2 # 1289 -----Original Message----- QSO over, time for bed. Should I wait for the fan to go off on the=20 KPA100 and then turn it off? or just turn it off? Sam N4MAP