The posted codes do work with my new TV but I'm don't understand the differences between the posted code for function 11 (Volume down) and my learnt code. I can see that the '0' burst pair is one bit different making a slightly shorter off time but I guess this is well within tolerance. You mentioned that the burst sequence is repeated - from my understanding of Barry Gordon's article, the preamble in this case should be 0000 006d 0022 0022 indicating 34 burst pairs in each of the two burst sequences but in fact it is 0000 006d 0044 0000 indicating 68 burst pairs in burst sequence one.