Direct TV remote will adjust volume, but not turn TV on and off. 55" model
I've gone through the remotes automatic programming routine. The remote operates the volume controls, but won't turn TV on and off!! (using "off" or "power") "TV input" also operates that particular TV function.
Just no on and off......
For your DirecTV remote, try using codes 10171, 11204, 11326, 11517, 11564, 11641, 11963, 12002. Unfortunately, if you have found a code that controls any of the functions of your TV, there isn't generally another code that will do more. Not every third-party remote is compatible, so you may wish to consider a higher-end universal remote control or contacting DirecTV for additional assistance in programming the remote.