Magnavox MDV630R/17 Troubles

Hi to all, I have a 2 yr old Magnavox MDV630R/17 recorder. The unit has worked really well until recently, when the picture would scramble while recording, or even while monitoring DirectTV. Even when I just have it hooked up to my vcr(no tv input) to copy my kids on video, (birthdays, etc…), the recordings would scramble, drop frames, and even freeze up.

It happens on all recording speeds, and on generic, as well as name brand media.

Any ideas?