Data transfer failed gpsmap 421s

Short in system. if in warranty send to manufacturer. If not open the case and see if any components and wiring are damaged or wire came lose from mother board.

Sounds like you need to contact Garmin.
They are great folks and very helpful.
http://www.garmin.com/us/support/
Here's a link to follow. You will see contact phone #'so on rhetoric right hand side of the 0age.

From the saved data when you backed it up on the computer. Use Garmin Express to transfer.

How to Backup User Data from GPS 72/76 or GPSMAP 76/76S

https://support.garmin.com > en-CA
It is recommended to occasionally back up the user data on your GPS 72/76 or GPSMAP 76/76S. User data includes waypoints, routes, tracks, and geocaches.

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  Transfer User Data From MapSource to a GPS 72/72H/76 or ...

  https://support.garmin.com > en-CA
  To transfer user data, such as waypoints, routes, and tracks from the MapSource program to these devices, some additional equipment will be required.
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  Manually Creating Waypoints on GPS 72/76 or GPSMAP 60 ...

  https://support.garmin.com > en-CA
  Press and hold Enter · Wait for the New Waypoint screen · Release Enter · Highlight the Coordinates field · Press Enter · Adjust the coordinates as desired with the ...
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  Backing Up Userdata (Waypoints, Routes, and Tracks) From a ...

  https://support.garmin.com > en-CA
  Before updating device software, it is recommended that you back up user data like waypoints, routes, and tracks. This should be done at regular intervals ...

Hello,

The 6 pin DIN plug found on the GPSMAP 421s data/power cable (Garmin part number 010-10918-00) is used for the sonar input.

Data transfer from the GPSMAP 421s is easily transferred by memory card.
Information about data transfer on the 421s is at about 50 seconds into this video.
http://www.youtube.com/gpscity#p/search/6/8ddIgvCAUmI

Real time NMEA data can be transferred using Garmin part number 010-10918-00 wired to a DB-9 serial connector (Instructions are on the cable).

It then can be adapted to USB using a serial to USB adapter.
http://www.gpscity.com/gilsson-serial-to-usb-port-4in-adapter-for-pc-and-mac.html

I've just had to do this. Somewhat annoying and I'm sure there must be a quicker way. Let me know if you find one. <br /><br />Firstly you need ArcGIS or something that can create .shp files. Load the Excel file into this. In Arc you need to right click the table and display the x y data (just to make sure it's all okay). Then save as a layer. Then export as an .shp file. <br /><br />You can the open the.shp in DNRGarmin and upload to your GPS..,<br /> <!-- from fixya rte -->

You have use the unlock wizard to install the key that is provided with the software. When I bought my Mapsource CitySelect, it came with two keys. The way Garmin does it is, you can install the software as many times as you want on as many machines as you want, but can transfer the maps, data, etc ONLY to unlocked devices. Last I checked Garmin wanted $75 for additional unlocks. Some data is not locked, like Topo maps and some tide points since this data is obtained (by Garmin) from the gov't, which is free for us (wel, minus taxes we pay). Contact Garmin support, they are very attentive.

when your in mapsourse make sure your gps is hooked up correctly and is loaded to mapsource...if so up in the main tool bar there is a tab called transfer-> send to device, or receive from device click on receive from device and a window pops up ask you what you want to receive maps, way, points, tracks, routes but make sure your device is showing

good rule of thumb is to plug your gps into your computer first then turn the unit on

Okay
guys: book says:
PIN 1 (red) 10-40 volts DC
PIN 2 (black) Ground
PIN 3 (blue) NMEA out Shows this goes to Autopilot/NMEA devise and to RXD positive RXD negative goes to ground (black)
PIN 4 (brown) NMEA in Goes to GBR 21 Beacon Receiver to a blue wire, brown wire on thaat devise goes to PIN 3 and the negative goes to ground
PIN 5 (white) no connection
PIN 6 (Green) no connection
PIN 7 (yellow) goes to alarm low Shows going to negative terminal on alarm relay and positive terminal goes to PIN 1 (red)

All Greek to me, have fun

Seadrive Joe

Have you highlighted the section with the map select tool, then hit the Transfer to GPS button? If you do, what happens then? Does it freeze?

If you are able to send routes and waypoints to the unit, you should be able to send selected unlocked maps as well.

Hi,
Have you solved the problem?
If not you shall check that the flexible cable to the screen is securely connected to the circuit board. Check also the other cables.
BR
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