Hi i got a duraband surround sound system from a friend and i tried to hook it up to my sanyo tv dont have any av jacks on the tv so i bought a modulator from walmart. and nothing happens when i push test sound all the speakers work static but they dont work.so i hooked it up to my dvd player and the mod light comes on but still nothing what can i do i have tried to hook it up and nothing is working plzzzzzzzzzz help me boohoo