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I can hear my transducer ???

Old 07-18-2014, 05:10 AM
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Default I can hear my transducer ???

I have a garmin fish finder and when I was out the other day after I shut the engine off I kept hearing a popping/clicking sound. I traced it back to the transducer wire.When I turned off the unit the clicking stops. I have also had problems with my battery going dead. Are these two related and how do I fix it?
Thanks
Old 07-18-2014, 05:29 AM
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What you are hearing is the pulse repetition frequency. A sounder send out a number of periods of a sine wave, this pulse train is repeated with a certain audible frequency. The frequency sendt out by a sounder is much higher than a human can hear, but we hear when the transducer is starting and stopping transmission.
Old 07-18-2014, 05:57 AM
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I was under my boat this weekend in the water and you could hear it very clearly. I hear not all ducers do it.. not sure but mine sure does. I've always wondered if that stuff bothers fish but we've raised a blue one 20 yards off the transom so at least in my case I guess not.
Old 07-18-2014, 06:00 AM
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This was the first time I heard it and I fish at least once a week. So it has nothing to do with my battery problems?
Old 07-18-2014, 06:21 AM
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I can hear mine. Its ultrasound after all. It has to make a noise so it can hear it reflect.
Old 07-18-2014, 06:28 AM
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Like Abbor said, you are hearing the transducer cycle on and off, you are not hearing the high frequency pulses that the sonar uses. This is pretty typical, you just probably haven't noticed it before. I doubt this has to do with your battery problem. Probably something you found because you were looking for a problem, and you hadn't noticed this before. Keep looking for your battery problem
Old 07-18-2014, 06:34 AM
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OK I just talked with a garmin rep and they said thhat if I am hearing it then there is a problem. He thinks I have a split in the cable and it would also drain the battery. I will look at the cable tonight and post what I find.
Old 07-18-2014, 06:36 AM
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The stainless ones are really loud. My B270ss on low is audible from the dock. On High you don't hear it. I only think there is a problem if you hear It with the machine off. Otherwise I disagree completely. A 1kw on low freq, especially a stainless housed, is very loud. I have installed many, and every one is very audible when set to the low (50 in most cases), Don't get yourself nuts.
Old 07-18-2014, 07:04 AM
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Originally Posted by pcozad1 View Post
OK I just talked with a garmin rep and they said thhat if I am hearing it then there is a problem. He thinks I have a split in the cable and it would also drain the battery. I will look at the cable tonight and post what I find.
I think the Garmin tech gave you some bad advice. I do a lot of electronic work on boats and you can hear clicks coming from the transducer and it's not an indicator that there is a problem.

It's hard to tell what your battery issue is, there is not enough information in your post. Is it going dead after a week of sitting, or is it going dead while running your electrical gear while the motor is shut down? What is the age of the battery and have you had it tested?
Old 07-18-2014, 07:18 AM
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Originally Posted by Team Ruby View Post
I think the Garmin tech gave you some bad advice. I do a lot of electronic work on boats and you can hear clicks coming from the transducer and it's not an indicator that there is a problem.

It's hard to tell what your battery issue is, there is not enough information in your post. Is it going dead after a week of sitting, or is it going dead while running your electrical gear while the motor is shut down? What is the age of the battery and have you had it tested?
It is going dead after a long day of run and gun style fishing with electronics ( only fish finder and GPS ) on all day. Battery is almost a year old.
Old 07-18-2014, 07:41 AM
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Originally Posted by pcozad1 View Post
It is going dead after a long day of run and gun style fishing with electronics ( only fish finder and GPS ) on all day. Battery is almost a year old.
Well there are two routes I would choose between. Get your battery fully tested, or test your current with the engine off. Your battery is either not capable of holding its full capacity anymore?'c or you have something drawing too much current. This is provided your boat only recently started this behavior. Since the GPS isn't popping fuses, it can't be TOO high of a current. But to check the current you will need a clamp on ammeter.
Old 07-18-2014, 06:10 PM
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I always thought that transducers would overheat if run out of water for more than a minute or so. I am talking about the 1kw thru hulls.

Is this true?
Old 07-18-2014, 07:00 PM
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Originally Posted by pcozad1 View Post
I have a garmin fish finder and when I was out the other day after I shut the engine off I kept hearing a popping/clicking sound. I traced it back to the transducer wire.

When I turned off the unit the clicking stops. I have also had problems with my battery going dead. Are these two related and how do I fix it?

OK I just talked with a garmin rep and they said that if I am hearing it then there is a problem.


As pointed out...its normal with almost every type and style of transducer to hear it "Click".........and it is not related to your battery issue.
In fact... in many cases one of the first steps in determining if a transducer is firing .... is to listen for the "clicking"..etc.


( But..if you can hear "clicking".. AND ...Elvis's top 10 hits...thats a different story...)

Last edited by semperfifishing; 07-18-2014 at 11:19 PM.
Old 07-18-2014, 07:11 PM
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they all make noise. the best way to find out which transducer is which on a boat (many have more the one). turn depth sounder on, go underneath, listen, remove the one that isn' making noise. as it's not the one being used.

I would check your alternator and voltage while running engine.
Old 07-18-2014, 11:15 PM
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Originally Posted by pcozad1 View Post
It is going dead after a long day of run and gun style fishing with electronics ( only fish finder and GPS ) on all day. Battery is almost a year old.
As it has been said so many times, it's not the transducer. For those that have never heard their transducer, put your fingertips on the bottom of the transducer while its operating... you'll definitely feel it but the amount of noise that they make will very with the mounting. Bronze / stainless versus plastic or in hull versus transom, along with power and frequency.
Still not enough information for an idea on the battery situation : do you have an old Suzuki that struggles to put out 12 amps or a newer engine that claims 50 , which GPS - bottom machine are you using? A 12 inch screen sucks a fair load, idling for 15 to 20 minutes doesn't replace the energy required to start the engine if you've got an older V6.
Gerald
Old 07-20-2014, 10:28 AM
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fish finder is a garmin 541. Engine is an 04 johnson 115 two stroke saltwater edition.
Old 07-20-2014, 10:32 AM
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When I bench test a transducer the clicking sound is what's telling the transducer is working.
Old 07-20-2014, 12:12 PM
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You can hear the popping sound from ten feet away.

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