Question about Humminbird 385ci Combo W Internal Antenna

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Unit wouldn't recognise the transducer. CS told me to turn off the demo mode. Did that and stuck the tranducer in water and no reading. Is transducer defective or maybe the head?

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It is hard to say. If you know someone that has a unit simular to yours just slide it on to there mounting system and then you will be able to tell if it is the unit or the transducer.

Joby @ Humminbird

Posted on Jan 03, 2011


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Depth reading is not working can I get a new Tranducer

Yes you can Brian as long as the company is still in business and they are still offering support to your model. You don't give any details of make and model. I am a Humminbird 998HD SI person.

Technology is moving on with HD, Side Imaging and Down Imaging so companies are starting to not support the older models. With Humminbird you can buy transducers and they will test and or repair your head unit for a fee. The fee offers a hint that they are just giving you a new or fully refurbished unit.

Let me know your make and model by posting a COMMENT.

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Have you checked the transducer for damage, or the wire to it. Also check the connection on the unit itself. On my Humminbird there is a Demo Mode. See if yours has one? If Demo Mode works, then it is the transducer.

Here is the contact page of the company.
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How do I get unit out of demo is stuck and will not turn off demo mode

Here you go

Turn on or turn off the display demo mode.
The console features a display demo mode,
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Your manual is here.

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the manual is here

I had this unit but gave it away recently. From memory, you just need to connect the transducer and make sure the transducer is in water. If not, it reverts to Demo Mode.

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I have a Humminbird fishfinder 525. It goes directly in simulation mode and says: No svinger connected... What could be the problem?

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Not sure what a 'svinger' is, but if you need more help, just ask. I can also edit the message and change 'svinger' to something else.

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A transducer is a sensor that does not need to make physical contact with what is is trying to sense. It can be used to detect the presence or position of something; on boats they are used to sense the distance to the bottom to determine the depth of the water.

These devices are typically employed to provide feedback - or "prove" that a command has completed or component is in the right place ie: A command to shift from position "A" to position "B" will be halted when the transducer at position "B" detects the presence of the shifter.

If the transducer is unable to detect the shifter at "B" or falsely detects that the shifter is always at "B" - it can cause problems. The device (computer or controller) that interprets the transducer output has no way of knowing if the shift has completed or not and can decide do something to limit damage to the motor, transmission, etc.

Here's a video that details the fix for your code on a Chevy Lumina

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-Andrew Hawkins

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