I have two C41s. One only works on IR. The other works on IR and RF. Both behave strangely on IR and this has been causing me a problem trying to use IR repeaters. It turns out, unless the remote is pointed pretty much directly at the C41 and at the same level, the first button press may not turn it on. The same thing happens going through an IR repeater. The second press usually works. It is almost as if the first press wakes it up so it can act on the second press, if that makes any sense. Has anybody run into this? Is there a solution? The unit that only works on IR is in a study and is connected directly to the TV, so multiple presses aren't a critical issue. The other unit is in a cabinet connected to the TV through a receiver. I can use the RF remote, but I am attempting to control everything with a Harmony remote because it can turn the receiver off and the RF cannot. What I find seems to work here is pressing the watch TV button turns everything on except the C41. Sometimes the C41 does turn on and sometimes it doesn't. Once the start sequence is complete it goes into a DTV control screen and pressing the list button (which is in the same location as the Watch TV button from the start screen) turns on the C41. It does not display the list after turning on. You have to push the list button again to do that. I haven't tested the unit in the study but with the one in the cabinet, signals from the Harmony Remote are not always acted upon. I had thought this was a problem with the IR repeater. Now I am not so sure. Could both boxes be defective or is this just the way they work? If so, I should resign myself to using RF and get an RF remote for the study. I can live with leaving the receiver on or having the C41 on when watching DVDs. Although, I don't like the idea of having to use two remotes if I want to switch between DTV and DVD.