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Garmin 4208 Marine Transducer Problem

When we first turn on the unit everything functions correctly, After a couple of minutes we get a message saying the transducer is disconnected and the power cord goes from green to flashing red

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  • 288 Answers

You either have a faulty head unit, bad connection between the transducer and head unit, or a faulty transducer or transduced cable.

Posted on Sep 12, 2013

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Posted on Jan 02, 2017

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  • 16 Answers

SOURCE: fish finder

You have either the DSM250 or DSM300 digital depth sounder module installed. The C80 is not seeing it.

There is an LED status light on the DSM. For starters, it should be lit either red, yellow or green to confirm it is actually powered on. We are hoping for a green light.

Double-check the cable between DSM and C80 for tightness. Also double-check the DSM's power cable for tightness.

The DSM's are sensitive to voltage level onboard. Make sure the DSM's connections to the circuit breaker panel or battery are tight and clean. Double check with a multimeter the there is 12V DC available to the DSM.

Let me know what you find.

Posted on Dec 28, 2007

  • 1 Answer

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

  • 597 Answers

SOURCE: installing an old used lowrance fish finder

I don't think your old fish finder is the LMS-332C GPS Receiver listed above in the description. You don't need the speed wheel for the fish finder to function just the transducer and transducer mount. You should mount that on the back of the boat towards the center but not too close to the motor and not too close to the side of the board. Don't let it hand below the level of the boat. That should keep it from getting hit by the trailer or dragging on the bottom. Try to make it as level as possible. The green and white wires may be for the speed wheel but i'd need a model number for clarification. Hope this helps.

Posted on Jun 02, 2009

  • 1 Answer

SOURCE: Transducer not connected

my 947 c says transducer not connected

Posted on Feb 11, 2010

  • 2926 Answers

SOURCE: my fishfinder lowrance x85 the

It is not the transducer. the transducer just provides the sonar reading back to the display. The issue is with the display head unit. Have you tried to adjust the contrast for the fading? Does the screen disappear after awhile? Is the head unit mounted close to other navigation equipment, such as a Compass that may cause interference?

Posted on Jul 24, 2010

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1 Answer

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Check you transducer cable route and connections. Look for kinks, punctures, & tears in cable. Visually check the transducer for damage. #2 check the units operation on a friends boat with the same set or research a local marine repair shop to check ops. Best of luck on the problem.

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Thanks,

Farrar

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