Question about Navman F4100SX Fishfinder - W/ Thru Hull Transducer (DUCER-2711R) GPS Receiver

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NAVMAN FISH FINDER 400 DISPLAY UNIT WILL NOT TURN DISPITE

NAVMAN 400 FISH FINDER DISPLAY UNIT WILL NOT TURN DISPITE THERE BEING POWER AT THE UNIT

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: navman 4500 fish finder w/transom mount transducer

I finally got an email reply from Navman. If the unit is less than two years old (mine is not) they will repair it. If it is over two years old, or if you can't prove that it is less than two years old, you can ship it to them and they will repair it for the low, low price of 355 US dollars.

Pretty nice of them since it appears these units are highly problematic isn't it? I am wondering if they guarantee their fix, or just have you on the hook for another 355 dollars later.

Good Luck Everyone,

Walt

Posted on Apr 30, 2009

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SOURCE: problem with navman 4150 fish finder

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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I have Humminbird 525 fish finder. I have power to the mount but no display on the screen.


If you have someone that has the same or simular unit just slide there control head to the base just to make sure you have enough voltage and current to power the unit. If the other unit powers up then there is a problem with the control head. Then you will need to call customer service to get it resolved.

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Turns off


The first thing you need to check is if you have sufficient power going to the fishfinder. Take a multimeter and measure the dc voltage going to the display when the unit is off and also on. If this is below 12 vdc this is your problem. You will need to check for loose connections and possibly replace your battery.

If the voltage is good then the problem lies within the display. Unfortunately, you would have to contact Humminbird directly to return the display for repair or purchase a new fishfinder.

Jun 29, 2010 | Humminbird 161 Gps Fish Finder Combo

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Fish finder wont turn on


Usually the simplest solution is a great place to start. Start by checking the supply, fuse, and power button. If this does not look like its getting you anywhere start at the power supply circuit inside the unit. Quite often a defective supply voltage or reverse polarization blows some of the capacitors and/or reverse protection diode on this board. Also ensure that the unit as a whole is off and not only the display. Try to listen for the "on" beep to start with. If that isn't there whip out your multimeter and check like above. Good luck.

Apr 03, 2010 | Eagle Fishmark 320 Portable Fishfinder

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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.........

Jan 07, 2009 | Navman Fish 4150sx GPS Receiver

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4150sx finder erratic depth


I had the same problem last time I was out in shallow water (in less than 2 metres of water) and I suspect that the problem was weed wrapped around the transducer but won't know for sure until I take it out on the water again. I had another problem re water temp which I'll enter separately.

Nov 05, 2008 | Navman Fish 4150sx GPS Receiver

1 Answer

Navman 4500 fish finder w/transom mount transducer


I finally got an email reply from Navman. If the unit is less than two years old (mine is not) they will repair it. If it is over two years old, or if you can't prove that it is less than two years old, you can ship it to them and they will repair it for the low, low price of 355 US dollars.

Pretty nice of them since it appears these units are highly problematic isn't it? I am wondering if they guarantee their fix, or just have you on the hook for another 355 dollars later.

Good Luck Everyone,

Walt

Sep 20, 2008 | Navman F4100SX Fishfinder - W/ Transom...

1 Answer

Navman 4150 fishfinder


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.

Oct 16, 2007 | Navman Fish 4150sx GPS Receiver

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