How do i get the display screen to show again and for me to press numbers on my remote so i can change channels?? my sagem dvr 6200t keeps displaying 'pb03' when i immediately turn it on. iT DOESNT SHOW THE DISPLAY SCREEN AND NOTHING SHOWS ON THE TELEVISION

Televison & Video - Sagem - PVR 6280 Freeview DTV Receiver / 40-Hours Video Recorder