Dave,

There is an earlier spreadsheet floating around for the AQUOS that has different AV1 and AV2 input commands. There wasn't an AV3 command on it. But, I created an AV3 which would be the next in the sequence:

Device Code: 1 Function: 53-AV1
0000 006D 0000 0020 000A 0046 000A 001E 000A 001E 000A 001E 000A 001E 000A 0046 000A 001E 000A 0046 000A 001E 000A 0046 000A 0046 000A 001E 000A 001E 000A 0046 000A 001E 000A 0679 000A 0046 000A 001E 000A 001E 000A 001E 000A 001E 000A 001E 000A 0046 000A 001E 000A 0046 000A 001E 000A 001E 000A 0046 000A 0046 000A 001E 000A 0046 000A 0679
Device Code: 1 Function: 54-AV2
0000 006D 0000 0020 000A 0046 000A 001E 000A 001E 000A 001E 000A 001E 000A 001E 000A 0046 000A 0046 000A 001E 000A 0046 000A 0046 000A 001E 000A 001E 000A 0046 000A 001E 000A 0679 000A 0046 000A 001E 000A 001E 000A 001E 000A 001E 000A 0046 000A 001E 000A 001E 000A 0046 000A 001E 000A 001E 000A 0046 000A 0046 000A 001E 000A 0046 000A 0679
Device Code: 1 Function: 55-AV3?
0000 006D 0000 0020 000A 0046 000A 001E 000A 001E 000A 001E 000A 001E 000A 0046 000A 0046 000A 0046 000A 001E 000A 0046 000A 0046 000A 001E 000A 001E 000A 0046 000A 001E 000A 0679 000A 0046 000A 001E 000A 001E 000A 001E 000A 001E 000A 001E 000A 001E 000A 001E 000A 0046 000A 001E 000A 001E 000A 0046 000A 0046 000A 001E 000A 0046 000A 0679

You might also try the Input 4 command above and the AV command with a special character beside it. A macro for AV2|AV Toggle should also work for AV3.

-Jon