@isazi
I don’t think you can restart the Spartan. However I did do a reset, twice, and then it worked fine. Not entirely sure why it took two resets but I’m back to the screen working correctly, and it seems to have sped up scrolling between menus too so that’s a minor win.
The downside is that it’s reset a load of the settings. Not the end of the world aside from it seems to give co-ordinates as degrees rather than OS so I’ll need to have a hunt to work out where that’s changed as it’s a long time since I last had to amend it.