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Dustin, Senior Technician
Category: GPS
Satisfied Customers: 13471
Experience:  Giving Directions to wayward GPS devices for over a decade. Worked in The US Army as A Network Switching Systems Operator/Controller
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I have a Garmin GPSmap 498 70808492 Power source is good. On

Customer Question

I have a Garmin GPSmap 498
Power source is good.
On off switch is not working
Submitted: 1 year ago.
Category: GPS
Expert:  Dustin replied 1 year ago.

Welcome to, my name is ***** ***** I will do my best to assist you.

When you say you made sure there was power to the unit, did you use a multimeter and test the voltage coming off the power cable itself?

I ask because, usually when the 498 series loses power like this and the unit is several years old. Its almost always due to the power cable failing due to corrosion from being exposed to the elements ( especially salt water and humidity ) over time. Usually replacing the power cable does the trick

So if you havent replaced the power cable as of yet, I would start there. And that should fix the issue.

I strive to provide great service, and greatly appreciate a 5 star rating clicked and submitted when you are satisfied.. I always answer follow up questions.

Dustin S.

Senior Technician and Network Switching Systems Operator / Maintainer.

Expert:  Dustin replied 1 year ago.

Hello again, I never heard back from you.

Did you still need help with this issue or did my steps help you?