I hate to ruin your day but.....
There is a manufacturing flaw in a large number of eTrex Vistas.
A defective component was installed and causes this problem.
I purchased a Vista, had the problem & sent it back to Garmin.
They were kind enbough to send me a brand new Vista... BIT
it has the same problem.... They replaced the second one
with a different model.... Works fine !
AlL I can suggest is that you call Garmin tech support, get an
RMA number & get a replacement... I am sure that they
have taken all the bad ones out of their inventory by now...
Good luck, and by the way I found Garmin Tech Support
people VERY understanding and easy to work with... No
hassles, no arguments and some very direct apologies when
they realized the extent of their Vista "problem",
"gomez" <adams_gomez@notmail.com> wrote in message
news:3f9elvoqu19p7basircocq6d7b4uq7nq67@4ax.com...
> I have just sent the following to Garmin Technical assistance. Anyone
> else noticed the same or is willing to experiment with their Vista to
> see if they get the same problem?
>
> (nb I am running version 3.20 but I have been having the same problem
> since I first noticed it with 2.60 and up).
>
>
> "I emailed you some weeks ago about this problem but have not yet
> received a reply. In the meantime I think I have narrowed the source
> of the problem down to a software bug.
>
> Symptom: When I switch to the Navigation Screen the unit switches
> itself off. I have to do a Master Reset to get the unit working
> again.
>
> Suspected cause: This happens *after* I change the bottom right
> display on the Navigation Screen to show the Final Distance (from the
> default Heading) then ask the unit to navigate a route.
>
> Evidence: I have just toured Scotland for two weeks using the unit to
> navigate routes with absolutely no problems. The unit was set up by
> doing a Master Reset then downloading the routes and maps for my
> Scotland trip. No other settings where changed (other than the Screen
> Contrast). On my return, I made the one change described above and
> *BINGO*.
>
> As a workaround I can avoid making any settings changes but this is
> obviously not ideal. I suspect there is also a related problem when I
> change the Time to show London Time but I can live without this.
>
> I would appreciate a prompt acknowledgement of this request for
> assistance and look forward to a fix being made available in the near
> future."
> --
> gomez
> (hot not not to reply)
> "The progress of the kart is more important than its direction"