Some times, after I have turned my 622 off for the night the light for TV1 comes on by itself. Just one light -the left light under TV1. This usually happens around 11pm to midnight. If I turn on the TV the receiver is off. If I turn on the receiver and then turn it off, the light is gone but no way of knowing if it comes on again during the night. I have my update set for 4am so it is not that. Any ideas?