S-Air issues

[Stu1986]

Hi all
This is my setup
TV: KDL-40HX803
Theatre system: BDV-E670W with two pairs of S-Air speakers

Problem:
I have had this set up now for about 3 years and absolutely love it but one thing that annoys me in moved house and since I have done the new set up my S-air speakers cut out intermittently, with the little green light flashing on the wireless speaker box.

the speakers are around 15ft away and never had the issue before any suggestions what it could be, when they work they sound great but then cut out then come back on like they lost signal, I have 2 lots of S-Air speakers and both do it.

suggesions would be great as it's driving me crazy, someone said it could be inference from the HDMI leads or power leads