Help! Pre amp turning on by itself.

 Yes, that's my problem. In the last month I have found my pre amp powered up for no reason. Just me and wife home, no one else in house. No pattern or consistency as to when I might find it on. Nothing has changed to system, nothing new added, there is no TV in room. Im wondering if this could be turned on by something remotely, or is the switch failing in some way? Going to reach out to Modwright also, but would appreciate any thoughts . TIA