[brent_s]

The "secret" menus are simply multiple front panel key sequences that will give you access to information or settings that Onkyo chose not to make generally available. I don't know if it's been confirmed that the Integra's have the same "OS" as the Onkyo's, but it looks like a safe assumption.

Not trying to be evasive by referring folks to another forum...I simply don't use them frequently and only have one sequence memorized. For the current known list, see post #1 in "The official Onkyo 705" thread at AVS. The 705/805 are identical enough that 90%+ of what's written there applies to the 805 and the thread starter has done a really good job of keeping the FAQ updated.

The sequence I do have memorized is for the internal temperature display...all of the key sequences only work on the front panel, not the remote.
1) press and hold "Display"
2) press "Standby"
3) releae both and quickly press "Tone".
You'll now see the temp of the two probes in the 805 (only 1 in 705) plus the fan speed (L/M/H/-). V appears to be some sort of output voltage in the preamp section...it'll track up/down with the volume knob and/or dynamic range of the signal content. Nobody's figured out what "Sec" is.

The secret video menu I mentioned earlier will allow you to force 720p upconversion. From memory, it also allows adjustment of some other picture settings. Problem is, they all revert to system defaults when you power cycle. If you're using a fixed panel display, it likely does a better job of resolution conversion than the 805. For quality receiver based upconversion, Onkyo has the 875/905/8.8 using the Reon processor.

-Brent