No sound Sonos Five and Pro-ject T1 phono sb turntable

I'm using a Sonos Five and Pro-ject T1 phono Sb turntable but when I go to use it no music will play unless I unplug the aux chord and turn the power off at the wall and then reconnect. Unplugging and plugging the chord back in doesn't work by itself. If I unplug the chord after every use still doesn't help.