A friend of mine suggests:
Get some simple COAX Female-Female connectors...
Connect the R15 directly to the dish to determine definitively it is the R15.
He should also reboot it, after connecting the two feeds to the dish.
If it works... have the multiswitch replaced.
On my HR's I can swap back and forth from tuners and instantly get a signal.carl6 said:Yes, it is important to do the reset after swapping coax - the DVR detects what is and isn't hooked up during startup. Sometimes a couple of resets might be needed if going from 1 to 2 tuners, or from 2 to 1 tuner.
Carl