Before three years i managed to enter the correct code (UNIVERSAL SBC RU 252 II REMOTE CONTROL) but now it does not work. I am trying to enter again the code but it is impossible. I press the the TV key and then keep pressing the kyes '1' and '3' but the green indicator light does not remains lit. The green indicator light remains lit only when i keep pressed the TV key for three seconds. What sould i do? the remote control is broken?