Question about Lowrance Boating
Loss of depth reading over 15kph, is usually caused by either turbulence from under the chines of the boat, or that the transducer is toe up, or back end up. If the transducer throws up spray, it is back end up. Toe up is harder to see. Get someone to drive the boat and look overboard. The transducer needs to be flat at the speed you want to see the information, and of course that changes depending it you are trolling or on plane and your trim.
Not marking fish could be a faulty transducer or that the sensitivity setting is not set high enough. Read the manual. I am a Humminbird person :>)
Posted on Dec 30, 2018
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Posted on Jan 02, 2017
SOURCE: When turning on the Lowrance
here is the link to your the lowrance web site. the trouble shooting guide says that if you tried to it on another boat than you might need to take it in for service. but there is a section that explains how to do a soft reset on the unit. you might try that.
please rate and comment on your experiance with fixya.
Posted on Aug 15, 2008
Had the same issue with another brand. Turned out the transducer cable was picking up noise from other cables (power, trolling mtr. etc). Try moving the transducer cable away from any other cables. I put the cable in a 1/4 " plastic housing up to the point where it was above deck and it stopped all the strange stuff. Not sure about the temp issue??
Posted on Jul 21, 2009
Yes quite possibly... But a few things to try/check first before you go out and get a new transducer...
1. Ensure the transducer is fully submersed below the waterline when floating and when on the plane... try lowering it more if you can.
2. Check the surface of the transducer itself (the underside) pointing down... If there are any minor scratches or scuffs, this can effect its function or performance. Minor scratches or marks can be sanded out with fine wet/dry sandpaper (at least 400 or 800 grit).
3. Isolate any electrical wires running near or next to the transducer cable. Also check connection of cable at head unit, and that the pins etc are clean, free of corrosion and making good contact.
4. Take your head unit to your Lowrance dealer and they may have a transducer there to use to diagnose whether it is indeed the trasnducer or a problem with the head unit.
Posted on Aug 01, 2009
I own a 1995 Four Winns and what you need is a Lowrance LSM-1 depth
finder unit. It accepts the two pin lead from the transducer and send
the depth reading to the dashboard display via the 6-pin connector.
There is also a three wire harness (red/blk/wht) that connects to a
The reason I know all this is my depth finder fried a couple years ago so I removed the Lowrance LSM-1 from the boat in order to find a replacement. Unfortunately, this was an OEM part that is not available from Four Winns or any aftermarket source. Probably your best bet is to look in a boat salvage yard or purchase an aftermarket depth finder.
Posted on Sep 19, 2009
You need to set the transducer lower. When at speed, the hull of the ship raises up out of the water and hence your transducer is probably not deep enough at these times to give a proper reading.
Posted on Feb 02, 2010
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