Question about Garmin GPSMAP 492 GPS Receiver
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: gpsmap 180 firmware corrupt
It sounds like it has lost its memory battery. Usually you
would get a "memory battery low" message as it is on its
way out but you don't mention that so perhaps it has
The battery is rechargeable - if you leave it switched off
and loaded with a fresh set of alkalines for a few days it
may recover. If not contact Garmin as they have replaced
many memory batteries free of charge even out of warranty.
Posted on Nov 01, 2007
You need to do an auto locate. This also corrects your time issues (wrong date and/or time will be corrected. To do an auto locate do the following.
Posted on Nov 24, 2008
I have the Sounder 178C. It will only work with 128 Mb Cards (or smaller). It does not work with the 256Mb Cards - says "Reading Card" forever.
Per Gramin, I had to buy the 128 Mb card and DVD map update. Then program the card with a USB data programmer to make it work.
Posted on Aug 12, 2009
Backlight problem: Remove the display, remove the light tube from behind the LCD. Buy a led panel from Ebay for around $5 and install it behind the LCD under the drfusing layers. Run the wires out to a 12 VDC source and there you have it.
Posted on Sep 15, 2011
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