After a 2-hour power outage my receiver started behaving strange, even though it's connected through a line filter. 1. The 'monitor' screen is activated, but the TV can't sync to it. I've tried 2 TV sets and you can see the screen is there, but you can't read it. 2. On 'TV' everything is fine, except that after 5 minutes or so the receiver turns itself off. 3. On 'DVD' it's back to normal now, but right after power come back it was joggling with the audio input, displaying DIG1/DIG2/DIGI alternately. Is there any 'master reset' on this receiver, either via remote or via hardware? Thanks.