The RCA TV most likely does not support discreet power commands. There are a lot of TVs that don't especially older TVs or cheaper models.
For those of you that don't know a discreet power command will only do one thing.
The discreet Power Off command/button will only turn the device (the TV in this instance) off. If you hit the Off command multiple times it won't do anything once the device is turned off. It will never turn the device on.
The discreet Power On command/button will only turn the device on. If you hit it multiple times nothing else will happen, it will never turn the device off.
A power toggle command is much more widely used. If you use that command/push that button then it will change the state of the device. If the device is on and you push the power toggle button it will turn the device off. If the device is off and you push the powert toggle button it will turn the device on.
The ON and OFF buttons on the DirecTV remotes are mapped to the discreet power commands if they are available in the codeset you have chosen. The PWR button is mapped to the power toggle command. The PWR button will only work for the TV when the slider at the top is set to TV. The ON and OFF buttons will sent the discreet power on and power off commands to both the DirecTV receiver, and the TV when they are in the DirecTV mode.
So for the OP's problem they are most likely going to just have to get used to moving the slider over to TV, and turning the TV off on it's own all the time. Or just keep the TV's original remote handy so they can use it to power the TV on and off. If that is not an acceptable solution I highly recommend they look into something like a Harmony 650 universal remote.
Edited by Beerstalker, 10 February 2014 - 02:18 PM.
Sometimes when I reflect back on all the beer I drink I feel ashamed. Then I look into the glass and think about the workers in the brewery and all of their hopes and dreams. If I didn’t drink this beer, they might be out of work and their dreams would be shattered. Then I say to myself, "It is better that I drink this beer and let their dreams come true than be selfish and worry about my liver."
-by Jack Handy