My friend has an old technics sh-ac500d sound decoder and has lost the remote and is unable to adjust his surround. I currently use the ax-4000 to run my home theater. I thought that I could help him out by using my remote at his house if someone has an ir file or a code that could work with his decoder. I could even help him teach his POS universal remote the signals from my ax-4000 once i get the rf signals. Help me out if you can thanks.