ST60 Tridata

[PEA-JAY]

My Tridata (speed) is displaying 3 dashes and sea temperature -5C!
The same happened for a while last summer but it worked well the rest of the season.
Externally the transducer and cable look like new and all connections at the instrument look fine.
Has anyone had this problem and solved it?

Raph.

[SYJetzt]

Would suspect the transducer or cabling! Check cable connections and/or perform self test as mentioned in the service manual (attached)

[IslandAlchemy]

The temperature is the giveaway.  It'll be the transducer or transducer cable.