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RayMarine c120 - Depthfinder Acting Up!

Old 07-08-2014, 05:35 PM
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Default RayMarine c120 - Depthfinder Acting Up!

We have 2 raymarine c120s and here lately the right machine, the one we use for the fishfinder has been acting some kind of crazy!

We have a airmar p66 transducer, transom mount. We were in 300' of water, dropped to 400' bottomed stopped reading. Got in 1300' and bottom picked back up on 50khz idling around the rig. Its kind of mind boggling. We pulled up to a spot that usually marks like a Christmas tree, (only 140' of water) barely got anything to mark.

Put in at Dauphin Island, ran around to the marina, flashed on the screen "DSM not Found" I think was the error, we had a guy at the marina pick the boat up with the forklift, automatically started working again. And has worked ever since. We bought the boat used about 5 months ago and haven't really fooled with anything since we've owned it. This is the first problem we've had.

Also, the screen froze on the way out Saturday, turned both the battery switches off, only to see the machines were still on. I had to turn the keys off to get the machines to turn off. Any help will be greatly appreciated! Thanks!
Old 07-10-2014, 06:27 AM
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Choose your fork drivers with more care perhaps...

Don't know, it sounds like a mixed bag of issues and unless you can replicate it it might be hard to diagnose. Make sure your power connections are good as a start perhaps

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