I have a new 756PROII and PS-125; the fan on the 125 seems a little loud and runs at odd times. I turned the rig off one night and forgot to turn off the PS; the next morning I awoke to the fan running as I came down the hall. It's hard to believe that the fan is needed when the rig is off; sometimes the rig is on for quite awhile w/o the fan running on the PS. Any thoughts? Terry Wells