Garmin GPSMap 496

[tls pilot]

Friends unit worked fine was in a hangar for 10 days then the unit cannot locate current position or acquire satellites

External battery pack is good and charged

they tried different ant and left unit on for 4 hrs

Any thoughts?
The unit is 4.20 software and data base is from Aug 2019

Someone thought Internal Battery (a button type soldered to board) But clock still runs (but wrong hour and wrong date by a day and 10 hrs off)

 

Thanks 

 

[carusoam]

4 minutes ago, tls pilot said:

Friends unit worked fine was in a hangar for 10 days then the unit cannot locate current position or acquire satellites

External battery pack is good and charged

they tried different ant and left unit on for 4 hrs

Any thoughts?
The unit is 4.20 software and data base is from Aug 2019

Someone thought Internal Battery (a button type soldered to board) But clock still runs (but wrong hour and wrong date by a day and 10 hrs off)

 

Thanks 

 

Date and time are probably really important for the unit to find the satellites….

See if there is a method for telling the device to forget everything and start over… a total reset.

Best regards,

-a-

[tls pilot]

no one seems to know a reset method

[JimB]

This isn't specifcally for the 496 but did you try it? https://support.garmin.com/en-US/?faq=Z41VbtQ1EH7F4wmdm0hfE6

Performing a Reset

1. Ensure the device is powered off
2. Press and hold both Page and Enter simultaneously
3. Power on the device while continuing to press both buttons
4. Release the Power button when Garmin appears on the screen
5. Release the other buttons once the Do you really want to erase all user data? or This will remove all saved user data message appears
6. Arrow to Erase or Yes
7. Press Enter

The device is now reset. You will want to take the device outside in a clear view of the sky for a minimum of 20 minutes to refresh satellite data.

[tls pilot]

Thank you

We have tried this, no luck…

[Greg Ellis]

There was a topic on another forum about resetting the 496.  This was an option to try to fix the issue

1. Plug the GPS into a wall outlet with the unit on and allow it to charge for eight hours

2. Perform a satellite reset: Start with the GPS off, a good antenna, and a clear view of the sky. Press and hold the ‘Out’ button then turn the GPS on using the ‘Power’ button. Continue to hold the ‘Out’ button until the “I Agree” message appears on the GPS. Release the ‘Out’ button and allow the GPS to acquire satellites for at least 15 minutes.

Someone else mentioned this:

1. Turn on the unit.
2. Accept the conditions.
3. When it starts "Acquiring Satellites", press "MENU".
4. Scroll down to "New Location", press "ENTER".
5. Press "AUTO".

I don't own a 496 so I have no idea if this would help your situation or not.

[tls pilot]

Thank you Greg

They already tried that combo

Next try involves updating software but most new computers have a usb 3.0 which

according to Garmin “overloads” the 496 

Thus they suggest using a USB 2.0

( my computer knowledge is limited BUT seems any USB the 3.0 reverts to a lower speed if that is what

the device needs.)