For the DVD my answer would be the same as I posted here:
[Link: remotecentral.com]These are, IMO, the most likely discrete On and Off commands for your Sky Box. I have no idea whether they work. I think all Sky Boxes use the same commands they are IR protocol RC6-6-20 a variation of the RC6 command set used by Philips and others.
Since the Pronto ccf file for the Sony Skybox receiver that I decoded used function=12 for power toggle like almost all other devices that use the RC6 protocol, I generated RC6-6-20 F=63 and F=61 for discrete On and Off respectively. 63 is On and 61 is Off for most devices that use the RC6 or RC5 protocols AND respond to discrete power commands.
In fact the other thread I referenced above for the Philps DVD uses the RC6 protocol and if you look at the last hex words 003D and 003F are decimal 61 and 63. The hex is in the database format however and it looks very different.
So use at your own risk -- they could turn everything purple or do a factory reset!
Sony-Sky (0,61) Function: 061 OFF
0000 0073 0000 0018 005f 0020 0010 0010 0010 0010 0010 0020 0010 0020 0020 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0020 0010 0010 0010 0010 0010 0010 0020 0020 182a
Sony-Sky (0,63) Function: 063 ON
0000 0073 0000 0019 005f 0020 0010 0010 0010 0010 0010 0020 0010 0020 0020 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0020 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 182a
Please let me know if these work.
-Jon