Mine was doing the same. Seems it had came loose from the epoxy creating an air gap. It looked fine until I wiggled it and it popped loose. Explains why it was intermittent. Worked when it had moisture between the epoxy and the transducer. (air kills the signal)
Here's a quick and somewhat permanent fix I am 'beta' testing.
In the aircraft inspection world, I used 'toilet ring' wax to hold the transducers in hard to reach areas. I applied the same logic to to my boat and it so far has held up well. I thought about re-applying with epoxy but it would take alot of effort to remove the old stuff and you may still get air bubbles reducing it's effectiveness.
I just softened up a piece of wax (new, of course) large enough to cover the end of the transducer about 1/4-3/8" thick. Then just 'push' it down into the existing epoxy. Unless it gets extremely hot (ie: your on fire), it should stay secure and if you ever wanted to check or replace, it is easily removed.
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Mad Max
95 Max 2300SC
Nine Mile Falls, Washington
"If you look like your passport photo, you probably need the trip"
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Transducer location
Linear Mode
