When I set a timed recording with PDC the unit can be shutdown but the fan stays on. Whereas a timed recording WITHOUT PDC does not require the fan to be on. Since PDC scanning (to change prog start time) generates no heat why does the fan need to be on. If I set a recording for 5 days time the fan runs for 5 days before the recording starts!!!!!!!!!!!! Of course Sony support are zero help. The people they employ know nothing about electronics. Can anyone explain or is this just dumb Sony?