If it was a battery issue I believe the entire unit would fail and not just a certain part of it, the GPS (if it has one) and the sonar do not pull their own individual power from the battery. If your unit powers up with any issues it has to be something in your settings.
Try Google, I'm sure you'll find that someone else has had a similar problem
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Last edited by jorluivil; 06-10-2015 at 05:42 AM.
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