Chip,

I answered your question regarding your Hitachi RPTV here.

[Link: remotecentral.com]

Gary's solution is a good one for most common commands but in the case of Hitachi, there is an official website with all of their RPTV commands that I translated into EFC's.

There are very few commands posted here in the discrete section that haven't been decoded into OFA setup codes and EFC's. Look in www.hifi-remote.com advanced code list by setup codes.

-Jon