Not sure if you have seen this. I tried all the codes with my Samsung plasma, and only 1 works. That's not the issue.
What I notice is, when i hit Power, the light on my tv blinks so it is registering the signal, but it doesnt turn on. I literally have to hit the power button on the remote 3 times until it turns on.
On the volume, with my old tivo remote, holding volume up makes the vol go up on the tv continuously. But with the RF remote, it only goes up 1 tick in volume if I hold the remote vol up.
I am thinking that the IR blast on the remote is set to very short in order to preserve battery, but my tv isnt capturing a long enough burst of IR to turn on.
I have NEVER had this problem with any other remote.