Hi. I have an old Cinema7 remote and a Denon PRA-1500 sans original remote.
After searching this forum and the web, I found two codes: 0160 and 0004. Neither one worked. Am I out of luck or is there something else I can try?
Thanks!

If you're in an exploratory mood, go to www.getzweb.net/jp1/, and try a Protocol Search, using Denon as the protocol.  Leave percent signs in all the device numbers, and select URC-7800 as the remote.  You'll see that 0004 is Denon, device 12, and 0160 is device 2.  There are 3 other device numbers available in the Cinema 7, so you might try those, perhaps with the power button. 

If that doesn't get a response, try systematically pressing each key on the remote while watching or listening for a response.  Do this for all 5 device numbers, or until you get a response.  If any remote button triggers some kind of action, then we know which device number the PRA-1500 responds to (hopefully only one device number).  At that point we can systematically try all 256 EFC values to find what values control the various functions of the pre-amp.

See www.remotecentral.com/cgi-bin/mboard/rc-remote/thread.cgi for an illustrative explanation and example of how to do this.

3FG-
Thanks for your response. I am not sure that I understand what the device number refers to. I have been trying to assign the codes to the 'RCVR' button -- should I be trying the other device selectors too? I am going through the whole list from that protocol search, to no avail.
Thanks again

The word "device" has multiple meanings in the IR world, so it is confusing. The remote has 4 pages of setup codes (cable/sat, audio, video, and TV). Pressing a device button selects the type of code page. Setup code 1234 carries different information in the audio page versus the video page, and generates different command codes when an ordinary button is pressed. But there are really only 4 types. For example DVD and VCR are both video types.

The Lookup Tool give you a list of setup codes; however only the first 5 on the list are actually built into the Cinema 7. The leftmost two columns are Access Method and Type. You can see that the first 4 are RCV or CD and the Type is audio. So those setup codes should be assigned to the RCVR or CD device buttons. Either is OK. Setup code 0076 is VCR/video and should be assigned to VCR or DVD/LD.

Those first 5 are the only setup codes which are useful to you--the rest are listed as n/a for the Cinema 7. There are about 45 buttons on your remote (other than the device buttons) and if checking for a response takes 5 seconds per button, then you should be able to check one setup code in about 4 minutes, or about 20 minutes for the whole exercise. If you don't get any response, then I think the odds of finding a response using the setup code for a non-Denon protocol are pretty poor, although not zero. Or you could try typing in all 256 EFCs for each of the 5 setup codes, but I wouldn't....