Question about Garmin GPS 12 GPS Receiver

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Batteries leaked acid. How do I crack open to clean?

I left the the batteries in my 8 year old Garmin GPS 12 had the batteries leak acid. Can anyone tell me how to crack open the casing? There is a very small screw at the bottom of the unit but it seems to just hold the battery case lid. There is also a small hole in the back (under the rubber cover but a scre driver just goes right through. I can't feel a screw in there. I would like to open the unit and clean it out so hopefully it can still be used. I called Garmin Tech support and they said it was worth a try but no one could tell me how to disassemble the unit.

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  • StillStrande Feb 07, 2009

    I have the identical problem.

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Just pry it open (gently) with a flat bladed screwdriver. It's glued together with silicone seal. To put mine back together, I scrapped thoroughly to get the old stuff off, crazyglued the corners, then later filled the gap with silicone sealer. Easy.

Posted on Feb 08, 2009

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Yes, it is indeed glued along the edges. As someone else mentioned, very carefully pry the case apart along the indented line that encircles the unit.

I've got mine open now, but looking at the battery compartment, I might have to drill a very small hole in one of the tubes, to remove the battery that is stuck at the bottom.

Posted on May 31, 2009

Iread somewhere that it was utrasonic welded

Posted on Sep 29, 2008

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Chances are it is glued shut, or if it's like a similar era Eagle Explorer, has two torx screws under the serial number sticker, and a gasket everywhere else.

Glue can sometimes be softened with a heat gun.

Posted on Sep 18, 2008

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The only way to fix this problem, is to bring in to the place you bought it and see if they have a technician who can look at it or do it yourself.
I can tell you that whenever batteries are left in any battery operated device and corrosion happens, that corrosion will leak into the circuit board and destroy some of the components.
If you are lucky, you can open it up and clean it.
Just be careful when openning and do not use a solvent in it, unless it is one recommended for cleaning circuit boards by an electronics technician. The cleaners some technicians use are not even for electronic, but have been tested on delicate circuit boards and have been proven to be safe.
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