I recently got a free TV from a Hotel, but I am unable to access the menu or change any settings, only thing I have access to is CC and SAP. and also the RCA plugs seemed locked, cant plug my dvd player or wii on it.. it does nothing. Any way to unlock these TV's?? I read somewhere that since these are commercial Tv's, I might need a Master remote, if so, anyone know where I can get one??