can't cast to my living room chromecast

[Senos1502 0]

I have two chromecast, 1 in bedroom 1 in living room, now can't seen to cast anything from emby to living room one.

Bedroom one is fine and picks up cast easily, and can stream to my Sony Z3 and samsung note 4, but nothing picked up on living room CC.

It's slow to find it and looks like it is going to do it when selected, but that's as far as it goes, when pressing play nothing happens. Have rebooted CC, no joy but I can select it and cast a you tube video, so doesn't look like CC is faulty, any help or advice appreciated