Need remote control code for ATT U-verse. I bought this TV second-hand and would like to program

Question

I bought this TV second-hand and would like to program it to work with my ATT U-Verse remote control, but they only have one code listed, 1259, which doesn't work. Does anyone know of an alternate code to make it work?

need help to program the remote to the Vizio 42" LCD TV. When ATT Uverse installer set it up he said there was none and a subsequent tech. was able to set it up but somehow several functions quit working. Anyone??