Unable to program RCA remote control for my component

If you are unable to program the remote control to operate a component, review the following information: 

Compatibility
If none of the programming procedures work, the universal remote control may not be compatible with your components, based on the type of infrared technology and the age of the components. Additionally, some RCA universal remote controls will only work with components manufactured after 1990.

Distance
If you are testing the remote control after you have entered a code, you may be too far away from the component or you may not have the remote control aimed directly at the component. Because the remote control uses infrared (IR) technology to communicate with components, there must be an unobstructed path between the remote control and the IR sensor on the component.

Code Entry Methods
If the Direct Code Entry method was used to enter the codes for your brand and the unit is still not functioning properly, try one of the automatic code search methods instead. During automatic code search, the remote searches for the correct code to program.

Modes
For the remote control to know which component you wish to operate, you must put the remote control in the correct mode by pressing the corresponding component button.

Combo Units
To program the remote control to operate combo units, such as TV/VCR’s, TV/DVD’s, or TV/VCR/DVD’s, use the combo codes in the Code List to program the individual corresponding component buttons. Once programmed successfully, the TV button controls the TV functions on your unit, and the DVD or VCR button controls the DVD or VCR functions, respectively. The codes in the combo section should be tried first, using the Direct Code Entry method on the TV and DVD or VCR buttons. If this is unsuccessful, use one of the Code Search methods to program your combo unit.

Batteries
Make sure the batteries are new and properly installed.