I have an Onkyo Receiver Model TX-SR606. I'm looking for the correct code to program my Verizon remote. There are 20 codes that I know of. Some of the codes turn on the receiver, but don't turn it off AND some of the codes turn off the receiver, but don't turn it on. Am I missing something?
You're not missing anything. The FiOS remote is too limited. Onkyo receivers only have discrete ON and OFF functions, they do not have a single command that will toggle the power. Unfortunately, the FiOS remotes do not have in their l;ibraries any way to deal with this. Your best bet is to get a third party iuniversal remote, like from Radio Shack, One-for-all, or Harmony, if you want to go a little bit more upscale.
You're still going to have to work a little bit to add the required functions, but at least some of these remotes allow that, while the FiOS remote does not.