Hi Bert,
I’m having the same problem with the TBM 850. My HDG / CRS / ALT and VS knobs do light up in blue but will not function with the mouse wheel. The knobs did work as of three maybe four weeks ago. Actions I’ve taken so far; looked into FSUIPC (registered) to see if I could assign the auto pilot knobs within the program (no go). Completely uninstalled and reinstalled the aircraft (no go). Around the same time my PC-12 ALT/VS Mode Control also stop functioning via the mouse wheel. I also did the same actions to the PC-12 with no outcome. Any help would be great.
Best regards,
Rob