I'm looking for discrete codes (at least Power on and off) for my TV (Hitachi 57TWX20B).

Chip

Chip,

It is always helpful to describe what type of remote that you are trying to program. I saw your question posed in a different thread that made it clear you need EFC's for a OFA remote. Hitachi is setup code TV_0145 and here are all the commands translated from the official Hitachi commands all of these are NEC1:Device=80:

OBC EFC Command
004 180 8
005 184 9
006 182 Enter / Hold / Store
007 186 11 / Antenna / Tuner
008 053 SA/A Monitor / NiCam / Bilingual
009 057 Input Source / PIP Source / Antenna
010 055 Last Channel
011 059 Mute
012 052 AUX / 0 / 12
013 056 1
014 054 2
015 058 3
016 117 Display / Cancel / Recall / Status
017 121 TV / Off Timer
018 119 Volume Up / Menu >
020 116 Help
021 120 Volume Down / Menu <
023 122 Power
024 245 Channel Down / Menu Down
025 249 Channel Up / Menu Up
027 251 Surround
028 244 4
029 248 5
030 246 6
031 250 7
033 217 Video 1
034 215 Video 2
035 219 Video 3
036 212 Video 4
051 155 Enter
058 023 OFF
061 024 Video 5
062 022 Power On
063 026 Power Off
064 165 Program
076 036 Home Theater
078 038 F / Red
083 107 Menu / Text
088 229 Dig 2TV / PIP
089 233 PIP Swap
090 231 Dig Shift
091 235 Menu / Reset
092 228 UP / Time / Blue
093 232 Down / Swap / Yellow
094 230 Picture / Sound / Normal / Green
095 234 Sound
097 201 PIP Freeze
098 199 2 Pix
112 133 Cursor Up
113 137 Cursor Down
114 135 Cursor Right
115 139 Cursor Left
176 157 AUDIO

From here you can either use Key Moves or create a device upgrade using KM Master. If you have other specific JP1 related questions you will get better answers using the message board at the JP1 Yahoo group and I also am a participant there.

-Jon

Thanks Jon.
I'll spend more time on the JP1 group.
-Chip