Massey ferguson 38 Datavision. . . Help!

Hi everyone,

Hi have bought a 1995 38 fresh for this season. I have discovered that I can't get to the harvest screen on the Datavision when I engage the thrashing mechanism button. According to the manual the harvest screen should automatically come on.

I know the computer knows that the button is being press due to it reading 12v on the electrical test screen when I press the threshing button.

Does anyone have any ideas?

Thanks for reading my post.

Rob.