Take ur dish remote and point it at ur tv. Press & hold the TV button at the very top next to the sat button till all 4 lites lite up. Then press the big red power button once. Then press the channel up button slowly till the TV turns off. Once it does press the # button then turn the tv back on using the same big red power button. Hope this helps.
or take dish remote hold the clear TV button till alll the lights on top flashes push the big red power button push channel up repeatedly till tv turns off push channel down till tv turns on once it does push # the tv button will flash 3 times now test your volume, if it works then tv is now programmed
if the tv has a built in dvd or vcr this can sometimes affect if the remote will program. i've never not been able to get a common name brand tv to program. check dish's website for updated codes and see how it goes, or do a powerscan as instructed above.