RCA Universal remote codes for the Mitsubishi TVs are...006,011,014,019,022,027,041,056,061,068.
First, turn on TV
Press and hold code search button on remote
Press and release the TV button
Enter the three digit code you want
Release code search
Push channel up, if device responds, that code worked.. If not, repeat steps 1-5 with each code until you find the one that works. This information can be downloaded from http://www.thompsontv.com/rcarc.html
If you want a hard copy with codes for all TVs.