I could not set the power and volume to control my LG 47LW5600 (and by extension, the models with the same mainboard, 65LW6500, 55LW5700, 55LW5600, and 47LW5700, which share the same mainboard (EBT61438207 / EAX63969204).
In the setup process, the music never stopped playing.
What I discovered is that saying NO the first time and YES the second time (even though the music did not stop), the remote was set up properly for my TV.
So, there is a bug in the remote setup process where the mute signal sent from the second remote profile does not turn off the TV audio, but does set the correct power and volume buttons.
Hope this helps someone set up their remote. Mine reports itself on the system as an RC127, labeled as RC-AL2 or FCCID TC2-RB14.