Question about Humminbird NS25 GPS Receiver

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HUMMINBIRD NS25 DEAD SCREEN

Dear Sir,
My GPS screen has a malfunction as the lower half of screen display blacked out and it is showing blue color, while the top half is giving normal readings.
your assistance is highly appreciated.

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1 Suggested Answer

hydetech
  • 113 Answers

SOURCE: Humminbird NS25 GPS

This is a common problem on lots of boats with any brand of electronics. Most likely it is being caused by a bad crimp in a wire connector, or by having too many connectors on a terminal in the power supply bus. Start at the power supply source and ground and replace any butt or terminal connectors with high quality heat shrink connectors (such as Ancor). Make sure that the connector is the right size for the wire.

On Humminbirds the problem could also be in the swivel mount that holds the power and data cables. The cables should be held in place by a metal bracket which is located under a panel held onto the swivel bracket by to small philips head screws. If any of those components are missing, the plug may be loose in the socket which could cause it to disconnect temporarily when the boat hits a wave. While you have it apart check the plug and the socket for corrosion.

I hope this helps. Please contact me if you have any more questions.

Posted on Feb 11, 2008

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