This is a new problem. PVR is Motorola 3400. Most (not all) of the time, when I enter channel numbers, directly or in the Guide, nothing happens. I enter the first of three (e.g., 243) and as soon as I press 2, the time pops up on the LED Display. Occasionally if I do it quickly it works. But it's getting worse. Should I reboot? Or is this something else?