My Denon MC7000 has shutdown itself in the last three weeks while at Wedding events. Fortunately I always bring a spare Pioneer controller to help me survive the nights. It will turn on again after I get home. It literally goes completely off,dead. Both situation have been at Barns where there is no air conditioner but fans, though a little humid and warm, the places have been protected from the sun. I do a lot of outside events and this issue is really a bummer. Just when I was planning on getting the Prime 4…no…no way now…I never had this kind of issues with any of the Pioneer Controllers I have had before.