Lyndel, the codes work. The problem is some of the earlier Samsung sets did not support discrete commands. They are all supposed to at this point but my distributor tells me that sometime that is not the case. The 46 and 56 are a lock for the codes to work and I haven't seen a non discrete 50 or 61 for a while. If I were you I would wait for the HLP line coming out soon with the HD2 chip.