Question about Garmin GPS 48 GPS Receiver

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"Upload ...Not Present" message. Nothing else on the screen. I replaced the internal battery last spring used it all summer. Have just checked internal and external batteries and all are fresh 3v internal and new AA four batteries. Upon startup the screen says "Upload" "Not Present" and there is no menu. I have tried hitting Page and Menu, etc. nothing happens. I tried leaving it out and on for 3 hours to see if it would find itself and satellites. I tried connecting to the computer and uploading the internal program the port was not found. Tried this a number of times and a number of ways. I have tried leaving it on to search for 3 hours and have tried to connect to my computer to reinstall the software but that does not work. The internal battery was replaced with a new one last year. I have fresh batteries in the unit. What is the problem? How do I fix it? Thank you. I love this unit and would like to keep it going. I have fixed two others for friends who needed the internal battery fixed. They use it as a backup. I have tried the Auto Locate procedure about 3 times. I have also tried clearing by holding the PAGE + Power. Then tried autolocate. Message "Upload... Not Present" still remains. Also have tried clearing by holding the MARK + Power. Then tried autolocate. Message "Upload... Not Present" still remains. Now I am wondering if this message has to do with an interrupted connection with EasyGPS from last winter. I was uploading waypoints, and thought it had completed and may have turned off and disconnected the plug before an operation was completed in saving waypoints off the Garmin 48. I do not know this for a fact, but that was the last operation I recall doing last fall, before starting the GPS up again on the boat this spring. I have also tried to connect the unit to Easy GPS via the serial port, thinking perhaps it would complete whatever it is trying to do. I have tried uploading routes and downloading routes via EasyGPS send and recieve and it does not seem to work. I wonder now if the interface setting has been reset, by my pressing PAGE+power and Mark + Power earlier. I would not mind that if the menus came up properly, but that is not happening. Is there some other way to kick it out of this mode? I turn it on and there is the message "Upload...Not present" and none of the menu buttons work to get it into the normal startup screen mode..... I've tried Quit, Page, Enter, Goto, Mark, Power (off and on), and none of the get the computer out of this mode and back into the normal menus for startup. I've removed the antennae and checked all the contacts and that seems fine, and reinstalled. Is there some small reboot button inside that I can jumper? I have tried taking the internal battery out and letting it sit for three days and it still does the same thing. Any suggestions would be appreciated

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Posted on Jan 02, 2017

  • 4 Answers

SOURCE: GPS 60 unit shows "Searching the Sky" status message all the time

The "New Location" fix above brought my GPS 60 back to full operation. I did reload the GPS software from Garmin but the recovery depended on well charged batteries and as above: turn the unit on
press MENU button
scroll to "New Location"
wait 10 minutes for the GPS to recover.

Posted on Apr 02, 2008

  • 3 Answers

SOURCE: waypoints and nav log

Based on your description I would suspect that the internal memory battery is depleted and needs to be replaced. This battery is required to retain waypoint and route information when the input power is low or turned off. The battery is soldered onto the main circuit board and needs to be replaced by a technician having good soldering skills and access to instructions for the disassembly and reassembly of the unit. There is a list of dealers on the Northstar website. Review the list and make a couple of phone calls to see which ones will do bench work on this unit.

Posted on Jul 13, 2008

  • 1 Answer

SOURCE: Garmin 48 memory loss

I have fixed several Memory battery low for the Garmin 48 .

Posted on Oct 15, 2008

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