Android 10 upgrade killed cast

[Crowflies]

I have a kd55-a9 which is lan connected and which until recently worked flawlessly with casting photos, videos or screen. I performed the TV firmware upgrade to os10 yesterday and now cast just results in a blank screen with only sound controllable from my phone. It's not my phone or my network as I have tried on 2 different clientsb and I temporarily switched the TV to be WiFi connected.... Very frustrating

[SatoruGojo]

@Crowflies Did you try to force reset it?

[Crowflies]

You mean do a completely fresh install of the TV? No I didn't do that because if the amount of effort to reinstall all the apps etc. I did uninstall the cast app and let it re install... 

I guess I may need to try and do that....