my problem is the remote will not work, this reciever is in my monaco motorhome the daeler has tryed to replace 3 remotes and this last time the whole reciever and remote, they install it and didnt even try to test remote, i installed battery in remote and does not work radio, this has been going on since day i of buying this motorhome, help, whats wrong, is there a trick to make the remote work this unit????????????????????????