take your dish remote and hold down the clear TV button till all the lights flash then push the big red power button now push the channel up repeatedly till the tv turns off once it does, push channel down till tv turns on
once it does, push # now test your volume, if it works then your tv is now programmed to the dish remote
Try this, it might b easier. Take ur remote & point it at the TV. Press & hold the TV button at the very, very top till all 4 lites lite up. Next push the big red power button once. Next push the channel up button slowly till ur tv turns off. Once it does push the # button. Then turn ur tv back on using the big red power button. Thank u @ ur good to go.
If you are referring to Sceptre TV, I have one, and the remote code book published by DISH gave me the code 677 which works on the 20.0 and 21.0 remotes. If you have an older remote you should try that as well, if that does NOT work then according to the Sceptre manual it uses the "Sony" codeset so you could try the Sony codes