Flex cable is cut, what to do?

I've teared down the SW3 from Sony since while taking it off i dropped it and the nfc didnt work, and yes the cable from nfc was disconnected. ive connected it and while putting the screen it was struggling and i accidentally pulled to hard and the flex cable is kinda cutted from the left side... There's no screen showing anymore but the whole watch works because i turned it on and it automatically conneted to my phone and i was able to request a screen shot. So everything works apart the screen. I didnt see any spare parts for the sw3 :/ what to do?