My experience has been that any Sony TV remote control will operate any Sony
television. In other words, there appears to be only one set of Sony codes.
So that is not likely the source of the problem. (However, you should the
programming instructions to make sure this is the case.)

Multi-device remote controls have some method -- usually a button -- for
selecting which device is in use. Make sure that the TV is selected. Simply
pressing the button for TV power does not switch the controller to TV
commands.