I have a Humax 80 hour machine which is set up with an amplifier splitter so I can use my VCR as well. This has been working well for almost a year. Last night, West Wing recorded fine. However at 9:00 when the channel changed automatically to HBO to record Sopranos all I got was pixelation to the extent that the the show is unwatchable. Now all I get is a black screen on almost every station with some exceptions. I'm not sure why some stations are working, but the majority are black screen. It's also weird that from one show to the next this problem occurred. Any ideas? I'm not sure what to do.