I had a timer setup on my new 510 (I've had it for less than a week) to record a show last night. I was watching a previously recorded program when the little clock in bottom left corner started flashing. I hit the "stop" button to stop the program I was watching and turned the receiver off. It then didn't turn back on to record the program that I had a timer for. What should I have done? Does watching a recorded show while a timer is set to start mess something up?