Unfortunately I am feeding this input with Composite Video,
and there is only two of those inputs available(the other
being Input 2), so I don't have much choice where to hook
it up.
Seems like you are having the same problem as me.
I have a Aquos 37PX5 model. and can use the following code as tgrugett mentioned with no problem:
Input 1: Device 17 Function 237
Input 2: Device 17 Function 238
Input 3: Device 17 Function 239
Input 4: Device 17 Function 244
And Input 1-Component for my set is Device 30 function 131.
As i am running out of input ports so i need to use input 1 - composite as well (for this set, input one has a component and composite port). But I am also having the same problem like you and unable to find a discrete code for Input 1-Composite.
One thing that i found out, for the Discrete Power On (device 17.func 74) of the IR code to work when TV is in power saving mode, you can disable the power saving feature, but another way is to send twice the code:
2x Device 17 func 74 ==========
0000 006D 0000 0040 000A 0046 000A 001E 000A 001E 000A 001E 000A 0046 000A 001E 000A 0046 000A 001E 000A 0046 000A 001E 000A 001E 000A 0046 000A 001E 000A 0046 000A 001E 000A 0679 000A 0046 000A 001E 000A 001E 000A 001E 000A 0046 000A 0046 000A 001E 000A 0046 000A 001E 000A 0046 000A 0046 000A 001E 000A 0046 000A 001E 000A 0046 000A 0679 000A 0046 000A 001E 000A 001E 000A 001E 000A 0046 000A 001E 000A 0046 000A 001E 000A 0046 000A 001E 000A 001E 000A 0046 000A 001E 000A 0046 000A 001E 000A 0679 000A 0046 000A 001E 000A 001E 000A 001E 000A 0046 000A 0046 000A 001E 000A 0046 000A 001E 000A 0046 000A 0046 000A 001E 000A 0046 000A 001E 000A 0046 000A 0679 000A 0046 000A 001E 000A 001E 000A 001E 000A 0046 000A 001E 000A 0046 000A 001E 000A 0046 000A 001E 000A 001E 000A 0046 000A 001E 000A 0046 000A 001E 000A 0679 000A 0046 000A 001E 000A 001E 000A 001E 000A 0046 000A 0046 000A 001E 000A 0046 000A 001E 000A 0046 000A 0046 000A 001E 000A 0046 000A 001E 000A 0046 000A 0679 000A 0046 000A 001E 000A 001E 000A 001E 000A 0046 000A 001E 000A 0046 000A 001E 000A 0046 000A 001E 000A 001E 000A 0046 000A 001E 000A 0046 000A 001E 000A 0679 000A 0046 000A 001E 000A 001E 000A 001E 000A 0046 000A 0046 000A 001E 000A 0046 000A 001E 000A 0046 000A 0046 000A 001E 000A 0046 000A 001E 000A 0046 000A 0679
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If anyone has information on input 1 composite, please help... thanks in advance