I have a similar problem with an OEM LCD TV (Infocus TD40p), evidently based on electronics from Harsper R&D. The remote has a single ON/OFF key, which I have learned as:
0000 0067 0000 002a 016c 00b5 0017 0017 0017 0017 0017 0017 0017 0017 0017 0017 0017 0044 0017 0017 0017 0017 0017 0017 0017 0017 0017 0017 0017 0017 0017 0017 0017 0017 0017 0044 0017 0017 0017 0017 0017 0017 0017 0017 0017 0017 0017 0017 0017 0017 0017 0017 0017 0017 0017 0044 0017 0044 0017 0044 0017 0044 0017 0044 0017 0044 0017 0044 0017 0044 0017 075c 016c 005a 0017 0f2a 016c 005a 0017 0f2a 016c 005a 0017 0f2a 016c 005a 0017 9d1d
The TV has a serial interface with separate ON (MPO00) and OFF (MPO01) codes, which leads me to believe that the IR interface must also support discrete ON/OFF. However, I haven't been able to make sense of the learned code.
IRTool gives the following interpretation:
Protocoll: NEC12
Device: 32.64
OBC: 0
EFC: 181
but NEC12 doesn't correspond to any of the protocols supported by MAKEHEX, nor to those listed in the README for DecodeIR.DLL, unless the "x" in NECx2 is a wild card.
How should I proceed?