I have just bought the Panasonic SH-FX71 wireless adaptor to go with my SC-BT230 blu ray home cinema system. I have followed all the instructions but there is just no sound coming from the rear speakers. I know it is not a problem the speakers because they work just fine when connected directly to the blu ray unit. I just can't work out what the problem is - I'm tearing my hair out. Anyone any ideas what might be wrong?