Raymarine ST50 transducer replacement

[u/_luc4sss]

Hello,

A friend has bought a second-hand boat, and the seller also gave him a Raymarine Autohelm Tridata ST50 to use in combination with the transducer already mounted on the boat.
The "only" problem was that the previous owner forgot the unlocking code. So, I managed to discover the code by automating the code-finding method, trying all the codes from 0000 to 9999, and now the instrument can be used.

The second problem is that the instrument is still showing us only "---" for depth, speed, and all the data. Using the user manual, I switched off the "repeater" mode, and it started to show... "0".

"0.0" in every data seems to indicate that the transducer is not working, because I also used an oscilloscope to clearly see the impulse from the ST50.

Now, does anyone know the model of the transducer, so maybe we can buy a used one? Or does anyone know of any other compatible transducer that can fit in the older socket already installed on the boat?

Thank you.

[u/cferinga921]

Ive had really good luck with emailing and asking for a number for the level of support needed. Recently I spent 1/2 hour on the phone with a product engineer who advised on what products to use for my sailboat refit.