"Kyle Boatright" wrote

The strange thing is that even using ship's power, the unit still dies
from time to time "wanting" new batteries. Makes no sense to me, since
the 4 AA's in it should last a long time given that they shouldn't see any
drain.. Besides, shouldn't the unit function just fine on ship's power
even if the internal batteries are dead or nearly so?

Thoughts on what the GPS/power problem might be?

The most obvious point to start at, is checking the ship's power to GPS
cord/adapter.

Check to see if the cord is putting out any power, and if it is, you still
will need to make up a jumper cord so you have a place you can check the
output voltage while the adapter is under load.

It could be that it is not putting out enough voltage/amps while it is under
load.

If that checks out, check the path from where the cord plugs in to, to where
the power joins the circuit board for continuity.

Is there possibly a switch to set the unit to change over from internal to
external power? That is just a long shot guess.
--
Jim in NC