If a code isn’t available, teach the RC-799M directly from your original remote.
The RC-799M is pre-programmed to work with many brands. To control your TV or cable box, you must enter a device code. onkyo rc-799m remote manual
For most compatible Onkyo receivers, the RC-799M works without any programming. However, if you need to program it to control other devices like a TV, follow these methods: Method 1: Programming for a TV If a code isn’t available, teach the RC-799M