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GooseSlayer

FishMark 320 ?

6 posts in this topic

Bought new for new boat,First time out to test and become familiar with went well.Next trip out was not so good. I drove to URL last weekend and the trouble started. While sitting 400 ft from shore my depth finder read 576ft deep.Not!It takes a lond time to get a bottom reading,when it does it reads correct depth for a while, then the screen loses the bottom(it seems to fade out).The depth numbers start to rise to the 500s.Does any one have any ideas,before I take it out and tell the salesman that talked me out of an X87 what I think of it the best deal for the money.Does a 4stroke motor have any thing to do with it?Its hooked to the battery direct.Any ideas?

Thanks in advance.Dave

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My brother in law bought the same unit and had the same exact problem. I told him I suspected the transducer but when he called reeds they sent him a new power head. That one is better. They indicated there may have been a bad run of a few of these locators. Call Eagle or call your dealer to fix the problem.
ccarlson

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You need to make sure the transducer is pointing down not horizontally. I just installed a new lms-320 and asked a lowrance pro-staffer how much to tighten the transducer down. He said to tighten it down as far as it will go, squeeze those rubber grommits till they bulge out.

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i also had a prob with a lowrance transducer. They didnt even ask for warrenty stuff just whats your address? No charge got it in less than a week.

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Did you talk to Eagle/Lowrance or the place that you bought the unit? I'm having the same problem with my new 320. I jsut called Eagle and they told me to try and adjust the sensitivity manually and see if that would take care of the problem. If that doesn’t work they said I would have to send in the unit for them to test it. I would rather not have to send it in.

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I had similar issues with my unit. Two things to watch for. It seemed to happen when I had my 2nd graph on a lot. I turned of the Vexilar FL-18 and most of my problems went away. The 2nd thing is if I am starting and stopping the boat a lot it seems like it can go crazy. Apparenlty some short power fluctuations can cause this to happen. Just some possibilities to check.

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