Problem after Power Cut

Hi, I have two Play:3's and this morning there was a power cut. When the power came back up no controllers (mac/pc/ipad etc.) could see the speakers.

I've tried re-starting the router and the speakers but with no luck. I've re-set the controller and tried to re-connect from the start (by pressing the mute/+ keys when prompted) but the controllers can never see the speakers. Any ideas? It was flawless up to now.

cheers,

Matt