Thank you for clarifying.
While it sounds like a reasonable request, in practice that is not so much the case, which is really a rca problem more than anything else.
The specific IR codeset for your tv is 10047.
It is possible, however, that no matter what code is used, your remote will not be able to control the devices you wish to use it with. Cable/satellite/AV Component manufacturers include basic functionality for common devices at the time the remote is made, but are not able to provide coverage for every make and model, and are not able to update for every new device that comes out, so there is no guarantee of compatibility. For the "off brand" tvs like rca, compatibility is more difficult as they rotate through numerous generic low quality manufacturers for parts so even 2 units of the same model may not respond to the same remote protocols. Rca also provides no support for their products in any form, which actually aren't even made by them it is an imported product that is badged with their logo.
Your best option may be to purchase a more robust, true universal remote to control all of your devices, such as a logitech harmony (click here for example) that will work for all of your devices. It is programmed through an easy to use software program on your computer, which downloads the most up to date remote and device codes from the internet, so it is virtually guaranteed to work with all equipment. It will also give you easy to use macro functionality, so you can press a single button to watch a movie for example, and it will turn on the dvd player, tv, and surround system, tune to the correct inputs on the tv, and start the movie playing, etc. Because of the online database with specific codes for each model, this type of remote has much greater functionality than the basic universal remotes (including the one that came with your system.)
Best regards, ***** ***** for the news,