Question about Raymarine St40 Depth Display E22038

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I bought a st40 for my wooden boat but am now told that i should have a bronze transducer and not nylon (plastic) for this application. Is that right?

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Either transducer will work. Just make sure you seal the transducer properly and everything will be ok.

Posted on Jun 14, 2010

Testimonial: ".. we have installed the nylon transducer keeping in mind the swell of the wooden hull and have not experienced any problems ..yet !! :O)"

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Hi

I realize this question has gone unanswered for quite awhile, but here is the link to ST40 owners manuals.

-Steve



https://flir.app.box.com/s/w7dp1h5hwi1f3fmda4x1/1/402191597

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1 Answer

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1 Answer

Hello, our Raymarine ST40 depth sounder on our trailer sailer has stopped working only shows 0.00 depth on the display screen. However the metres symbol now flashes on/off. I have checked the cable...


now there is a chance that the transducer is bad ,, but I would check the battery voltage and make sure you have a soild 12 volts to the unit. also in my many years of working with and installing these units on boats I have see the needle pins ( where the plug inserts in the back of the display unit ) bend and/or break off completely. look in the plug area of the display unit and make sure all pins are intact. one more place to look for the problem is in the plug itself, take the plug apart and inspect the wire connection and make sure they are all good. if after all the above has been checked then I would assume that it is the transducer itself.
if you have anymore questions with this problem, please feel free to write back and ask,

c...

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1 Answer

My marine speed transducer needs to be replaced. I have a Beneteua 351 which is 16 years old. I have cleaned the transducer several times and then reinstalled. It will work for a couple of minutes and then...


Yes. You need to make sure you get the same transducer though. With you system being that old, you may have a transducer that is old where there is not a direct replacement. You need to make sure you get the correct transducer. You may need to get a "flapper" kit to update your housing to the new style.

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i will exchange this for you, free shipping no charge, just ship it to me to inspect and i will send you the transom ducer no charge, if you have a bronze thru hull with speed and temp to trade for a plastic transom mount with speed and temp, let me know

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1 Answer

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50/200 combination will work fine but 170/200 may be a little close in frequency and give you some trouble. "May be OK" doesn't leave me with a lot of confidence.

Jul 24, 2008 | Raymarine St40 Depth Display E22038

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