OK, I did that. It stepped through all the codes but the receiver never turned off.
So I went back through the steps listed in my previous message. They resulted in the same thing of course. Had to do something different, so I tried the "Select OTHER Device brand" box (rather than "Select Audio Device brand"--even though a receiver is certainly an audio device), picked Onkyo in that box and clicked Get Code.
Well, lo and behold, the page that appears has my remote on it and codes [FONT=Arial, Helvetica, Sans Serif]2201, 2214, 2409, 2425. I tried 2201 first, and it worked! Cable remote now controls volume on the receiver. The key was to look up Onkyo as an "OTHER" device rather than as an "AUDIO" device. Go figure. Pure luck I found it, but when luck works out, take it! Problem finally solved.
As a point of interest, even though it controls the volume and, nicely, channel key moves the receiver up/down thru the memory-stored stations, but the power button does not turn the receiver on/off. But that is a minor inconvenience--mainly I wanted the volume control on the cable remote, and now it does that.
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