The code for the 30H should be TV 205. Did you use a preprogrammed code with the MX-500 or did you learn the commands? If you used a preprogrammed code, try that one with the MX-650. Also, have you tried learning the commands from your Sim remote or from the MX-500? Finally, make sure you're set for IR transmission with the 650 first.

Mike
www.SurfRemoteControl.com