I have two DVRs in my house. I have a DirecTV AT-9 dish with a Zinwell WB68 Wideband 6x8 Multiswitch. Only 4 of the input and output ports on the Multiswitch are being used.
On both the living room and bedroom DVRs, one tuner has stopped working. The living room DVR is an HR-24. The bedroom DVR is an HR20-700.
What can I do to see if the problem is the multiswitch or the dish? I don't mind swapping wires around on the multiswitch. I just want to rule stuff out. If I can also get it working again, all the better, of course.
Note, 6 output wires, but only 4 are in use.