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Raymarine c120 - Sounder not reading depths right

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Raymarine c120 - Sounder not reading depths right

Old 03-25-2007, 09:25 AM
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Default Raymarine c120 - Sounder not reading depths right

I have a Ray C120, a DSM 300, and 1KW shoot through transducer. First time out since winter and I noticed that it wasn't accurately reading depths. The only thing scrolling across the screen were jagged lines from the top of the sceen to the bottom and temperature readings were way off On the bottom left corner of the screen where the depths come up all I got was the little lines as if it was not finding the bottom. I have a seperate temp. sensor and it seemed to be right on the money. Anyone have any ideas as to what it could be? Is my sounder bad or is it maybe the transducer?
Old 03-25-2007, 10:15 AM
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Default RE: Raymarine c120 - Sounder not reading depths right

Check to be sure there is fluid in the transducer tub. Mine leaked out and I got the same symptoms on the screen you are seeing.
Old 03-25-2007, 12:28 PM
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Default Re: Raymarine c120 - Sounder not reading depths right

Chris, have the same setup. Cowdogs is right. My mineral oil started leaking and when it gets below the transducer, it stops working. It leaks so slow over time, that it works sometimes, then goes out, then works again. I had my dealer seal it all back up and they filled it again with mineral oil. Since then, airmar is now saying don't use mineral oil, it degrades the sealant over time. They now say to fill it with non-toxic antifreeze so that is what is in mine now and no problems for 4 months.

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