I have a lowrance X-25 GPS/ sonar. The sonar is working but when I turn on unit I get a message that says GPS not responding and it isn't working? What could problem be?
Already Tried: removing and replacing chip? not much else.
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Does it say gps not responding or module not responding, or gps module not responding?
Module not responding
The module is the "antenna". the little dome shaped thing. Turn the unit off and unplug the module then plug it back in. If this doesn't make it start working the module will need to be replaced. Your head unit is just fine though.
Experience: 12 years building and repairing custom, boats