I've tried all the codes in the manual for LG TVs, and nothing seems to work. I've also tried the codes allegedly available from LG for the same purpose, and they don't seem to work either. Anyone have a clue? This is not an insurmountable problem. I can just continue to use the TV remote, but if I can get the right code, I only need to use the TV remote to change HDMI inputs. A lot simpler.