Question about Navman Fish 4150sx GPS Receiver

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Navman 4150 fishfinder

This finder loses its track of depth and speed from time to time. do you know why this might be????? cheers

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Depth: Could be for a number of reasons, too deep for the sounder - check the manual for it's max depth. Dirty water, sounder unable to penetrate through to the bottom. Weed or other debris covering the transducer. Transducer on a swing mount & being pushed out of alignment then dropping back in once stopped.

Speed: Is the speed readout controlled by a GPS or paddlewheel? If it's GPS, check the power connection of the sounder, may be loose which would also cause the depth to 'drop out'. If it's paddlewheel, you're down to bad connections or faulty unit.

Posted on Feb 24, 2008

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Posted on Jan 02, 2017

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Go to the Website of Pertec.co.za and download the manual for the 4150 and 4150sx
Hope this will help

Regards

Albie Rossouw
[email protected]

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