hi have a panasonic SA-PT875 home theater unit and a panasonic SE-fx70 wireless surround sound wireless box. The problem is .... The box seems to be matched to the theater system as green light is on and goes red when main system is turned off but we cant get any sound out of the two speakers that are attached to the se-fx70 wireless box . We have tryed everything and followed manuals pairing etc but still no joy ..... Can you help please . Kerry