I some code the t.v. is fisher

Try this: first turn on your tv,then push and hold the CODE SEARCH button on the remote control until the led stays light release him now push and release the TV button after this you need to push and release the POWER button until your tv turn off .Then push and release the button enter to get the code saved you need to be patient because you need to push the button between 100 to 150 times.
Good luck

Here's th link to RCA codes.
http://remotefinder.rca.com/default.aspx?site=rca