Xbox One S Controller Constantly Inputting RAUP

Hi all,

this is my first post, so bare with me.

I'm trying to fix up some Xbox One Controllers. I currently have two 'S' controllers, both of which are stuck to 'Right Analogue UP (RAUP)'. It does register other button when pressing them in test mode, however it reverts to the RAUP when left alone.

I have removed and replaced the module on one, to no avail. Now I have tried removing it completely. Strangely, it is still registering as RAUP, even though there is no module.

Can someone help me figure out what is going on?

Many thanks,

bezcore