Happend to our e-60. Took them four times to get it right.
Turned out to be a plug behind the Navi that was not seated properly.

At least that's what they said.

__________________
"What you hear in a great jazz band is the sound of democracy. “The jazz band works best when participation is shaped by intelligent communication.”
Harmony happens whenever different parts get to form a whole by means of congruity, concord, symetry, consistency, conformity, correspondence, agreement, accord, unity, consonance…….