Question about Navman Fish 4150sx GPS Receiver

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Problem with navman 4150 fish finder

Could you please help. I have a Navman 4150 fishfinder that has been working great. The last time I used it the depth numbers were showing the wrong depth and were flashing between numbers and blank dashes. I have checked the transduser to see if it had been knocked up or if weed was caught around it but all looked okthe water I am using it in is salt water and very clear.The unit is about 3 years old now and has not had a great deal of use.Hope you are able to help. Cheers

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  • Michael Brophy Jan 09, 2009

    My Navman 4150 was working fine and then suddenly stopped showing the depth and anything in between, just -.- appears on the screen. It also appears as -.- on the data screen. However, you get the full works when you put it into simulation mode. This indicates to me that the transducer has a problem. Does anyone know for sure or does anyone know how to check the transducer?

  • Anonymous Mar 08, 2009

    I have the same problem. My 4150 worked great for two seasons and now will only function in simulation mode.

  • harry19612 Mar 19, 2009


    I have the same issue. 
    I have the 4150 with a through hull transducer. Recently I bought a transom mount transducer and the unit is working fine again.
    This means my T/H transducer is broken/malfunctioning, or ofcourse something with the wiring, however that seems highly unlikely to me.



  • walteranddeb May 02, 2009

    I am having the same problems with a four year old Navman 4500. I have gotten no help from Navman "customer service". If anyone comes up with a solution, I would appreciate being in the loop. I will relay any info I find as well.

    Thanks,

    Walt


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I installed my Navman 4150 depth finder along with the Navman GPS unit when I purchased my Bayliner Trophy 20Ft. Offshore model. Everything was ok for one year and it has been downhill since then. Losing signal, unbelievable high depth ranges, blank periods, etc.. I now can't even get a reading tieded up at the dock. I am now giving up and shoping for a quality unit.. Cape Disappointment.........

Posted on Jul 21, 2009

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