How can I replace the wifi/bluetooth component?

My brilliant Note 10.1 2014 is not able to keep it's wireless features on. It turns them on and off willy nilly. I have tried checking for software conflicts and problems without success so I have done a factory reset, reluctantly. No joy. What little I could find out about this problem would seem to indicate that it is an issue with the hardware component and so I would be happy to replace it if I knew what I needed and where to get it from.

Can you help?