ditto - reset works for signal on both tuners
James/Tate Satellites is absolutely right...I just went through this last night with Directv...I had worked really hard to run an additional cable through my house to be able to use both tuners on my new R-15. I made the mistake of calling Directv tech support (got tier 2) before trying to "reset" again w/the red button first. While they were nice, they were confused and the call took forever before it was finally recommended to reset. Sure enough, when I did that, both tuners picked up the signal.