Garmin 178c depth reading stopped working

[Whelenator]

So we were down to Valdez this week and my depth readings stopped working . The GPS functions were fine but depth and fish finding went to crap. Happened about the time I needed to get around Bligh reef..
Does this sound like a transducer problem (Airmar) or something even more expensive?? I really can't afford a new unit this season but a transducer isn't out of reach. Thoughts anyone??

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[Paul H]

Can't help other than to say that the gps portion of my Garmin combo unit went t/u on me last trip out. It fires up just fine, but can't lock on a single satellite. The sounder portion works fine.

[MacGyver]

I suggest you two get together and switch units if the problem you have stays with the unit the unit is bad if not it may be a bad antenna or transducer.

[Whelenator]

This unit I think is about 7 years old. Would anyone on here have an extra transducer you would sell to me or let me use it Monday in Seward? We got 1 silver in Valdez and I am trying to get us and my parents some fish before they head home Wednesday.

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[Frostbitten]

I had the exact same thing happen on an older Garmin 182c...sonar went TU, GPS worked fine. It's certainly worth a try to swap out transducers. The issue with mine turned out to be internal, and Garmin no longer supported that model, so I had to replace the entire unit.

[Whelenator]

I just looked up some FAQs on Garmin and they suggested checking if the transducer is clicking, mine is. Not sure at this point what I can do. I am not seeing any further testing info online.

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:R