You can do a total reset, clear and restart by holding down the page key as
you switch the GPS 90 on.
This will clear the almanac data and start the unit clean. It may take up to
15 minutes to find the satellites and get a new almanac data.
Try that procedure, if it doesn't work then there is another combination of
keys upon start which will put it into a diagnostics mode where each
function can be checked. Let me group know and I will describe how to get
into the diagnostic mode.

--
Roy
N5804F - PA28-181


"Roy Smith" wrote in message
...
In article ,
(bd) wrote:

I have a GPS 90 that doe not work. It powers up and seem alright
except for the fact it doesn't pick up satelites. Anybody know if
there is a reasonable fix for this without spending an arm and leg
with Garmin?

There is a "cold start" mode which makes it do a full reset, you might
want to try that. I forget exactly how to get into that mode, but it's
on the same page where you can set "battery saver" mode.

The receiver uses the last fix it had as a starting point to converge on
a new fix. If you power it up a long distance from where you powered it
down last, or a few other possible scenarios, the stored last fix will
be bogus and sometimes this confuses the receiver and makes it hard for
it to lock onto a signal. The cold start mode makes it throw away any
stored fix information and start from scratch. It might take as long as
15 minutes to converge on a new solution when you do this.

It may not work, but it's simple enough to do and doesn't cost anything
to try. I've had to do that once or twice with my Garmin-90.