Our old Tivo box is acting up (I think DVR-80s use dog years so ours is
really old). If you watch the signal strength the satellite 1 input is normal
and stable. The satellite 2 input (on about 6 of the 32 transponders) is
cycling on and off. We've done enough troubleshooting to prove it is
inside the DVR-80. I do have some spare parts but I need to know which
circuit area is the probable cause and if someone knows where we can
find a diagram for the box.
john and curly