Question about Garmin GPSMAP 178C GPS Receiver
My Garmin 178C is about 3 years old. Recently, I get no sonar reading with it. Still have water temp but the sonar screen is only a blank background and I get no digital depth reading. GPS mapping and all other functions continue to work fine. Transducer troubles? Thanks in advance for any help.
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Posted on Jan 02, 2017
SOURCE: GPS wont boot up
Use with caution: This will delete your user data on the unit.
Try a reset:
You could try a master reset;
Posted on Dec 16, 2007
No.......the C340 STREET PILOT has a hidden reset button. Put your fingernail in the slot just under the GARMIN name on the front face plate. Gently pull the face plate outward. Don't take it all the way off. The reset button is on the right side of the front screen just under this plate. Use a pointed object and hold the button IN for 3 seconds and unit will turn off. When you power it back up it will REBOOT.
Posted on Jun 10, 2009
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