I recently upgraded to 722k from 222 and also purchased a new tv. I programed the new 722k remote to code 601 for the new Samsung TV, and all tv functions worked properly. I then took my old #1 5.3 ir remote and programed it to code 601 as a second remote and the TV does not respond. If I program it to code 516 some functions work but not all. I tried a second 5.3 ir remote and code 601 and it also didn't work. I verified that each remote is sending out the correct code of 601. The old remotes seem to work fine with 722k and other tv in the house. Any one have any suggestions ?