hi, please could you let me know the make and model number of your remote, this may be written under where the battery goes as each model will have a different setup option.
if you do have the manual but dont have the codes then what you can do is an auto scan where you keep pressing the standby button until the telly turns off you then save it at that point then the remote should work the telly, if you dont have manual then let me know ok
i need to know if its made by ge or rct etc as their are a few people who make themCLICK HERE
you may find the manual or codes here
here is the guide for an rca universal remote follow these instructions to scan through all the codes on the remote and save it when you come to the correct one, this is for rca how ever their are many other universal remotes so this may or may not work
1 turn on the target device, in your case this will be the telly
2 press and hold code search until the led lights light up
3 release the code search button
4 press and release the component button you wish to program in your case this will be tv it should flash then light back up and remain lit
5 press and hold the code search button until your tv tuns off then let go and press enter to save the code.
now if your remote is and rca one then keep doing this until the telly turns off then press enter and you should then be able to control the telly with the remote, if how ever this is not the instructions for your remote then let me know what make the remote is ok.
let me know how you get on or if you need further assistance ok