You'll probably have to get quite a bit more detailed in description if you want effective help. Are any/all of the channels linked? Assigned to a DCA? All faders or one? Or a few? What happens (in order) from the time you turn the console on until this starts to happen? How long does it take? Have you tried completely reinitializing the console to be sure some gremlin has not been programmed in?
Good luck!
--Kevin
