How is your power feed?
I had my G11 do something strange a few weeks back, Goto Star 1 OK, Goto Star 2 OK, Goto Star 3 pointed to ground. Power off Cold start, Star 1 OK, Star 2 OK, Star 3 Ground.
Pulled the power cords out, re-seated them, Star 1 OK, Star 2 OK, Star 3 OK.
Bad power, makes bad Gemini
