Question about Lowrance iFinder GPS Receiver

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I have a Lowrance x-55,serial no.000933576,my problem is when I get into 3ft.or less of water it flashes 400 to 500 ft.,most of time it will come back on line when I get into deeper water, sometimes I have to shut it off for awhile, transducer is mounted on my trolling motor,so has hit the bottom some,any suggestions, Thank You, Scott Blackburn

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The transdoucer (sensor) may have been damaged. Try a new one. It can happen that there is a problem with the unit itself, but I am strong to think it is a defective transdoucer.

Jerry G.

Posted on May 07, 2008


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What's wrong? My Lowrance Mark 5x dsi depth finder flashes or pulsates a depth of 60 ft. All the time.

Since the unit powers up, we can pretty much eliminate a power supply problem.

I would start by carefully inspecting your transducer lead for kinks, crushing etc. Assuming the cable is OK, clean and lubricate (silicone spray, safe for plastics) the cable end and where the cable connects to the unit.

Hope this is helpful to you.

May 04, 2015 | Lowrance Boating

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Hi i have installed a lowrance m52 s/gps in my boat i have turned it on while boat still on trailer and the unit is reading 5.6 ft deep, is this what it should say?

GPS uses satellites to determine position and altitude. Depending on where you are, above or below sea level, it may say you are flying in the air or a few hundred feet below the water. YOU have to determine what your mean altitude is by knowing what the local altitude is above or below sea level. If you were in Denver, Colorado, it would tell you that the boat was about 5,341 feet up in the air. In Death valley you would be below the water because it is below sea level, -272 feet.

Aug 25, 2012 | Lowrance Boating

1 Answer

The GPS component of my Lowrance Elite-5 Gold is malfunctioning about 50% of the time.

Hey Les, Since you have replace both the unit and transducer, you have eliminated/diagnosed most of your problem.. Its in the wiring... sometime when I am in full GPS mode I get erroneous depth readings..?? Have you tried a different GPS module (the "puck")?

Apr 22, 2017 | Lowrance ELITE 5 GOLD COMBO

1 Answer


Sounds like the power button is pulled loose from the circuit board or the power switch went bad for some reason. You can't check this out as it is sealed to be waterproof and opening it violates the warranty. The only way to address this would be to send in to Lowrance Customer Service.

This should not be a common problem and should be covered by manufacturers warranty if still within the 1 yr warranty period. If out of warranty, Lowrance Customer Service should still be able to replace or repair it for some sort of cost.

To speak with US based Lowrance Customer Service, call toll-free at 1-800-324-1356, Monday through Friday from 8:30 am to 4:45 pm Central. Or email them at with problem, product model and serial number (located between the batteries in the battery compartment). CS On Hold times range between 0 and 4 minutes right now with Monday mornings being their busiest times.

A Lowrance Guy

Jan 30, 2012 | Lowrance Endura Out&Back Handheld GPS...

1 Answer

How do you get the fish to show up on the screen on a lowrance X96 depth finder? We just got it and there is no manual with it.

Are you looking for the little fish symbols?
Press MENU, down arrow to SONAR FEATURES and press ENT. Arrow to FISH SYMBOLS and press ENT. Press EXIT twice. Any significant return in the water will now show up as a fish symbol.

Are you looking for the fish arches?
You won't get any arches unless the boat is moving and of course there are fish passing within the transducers signal. The shallower the water, the less area you are covering and less likely to get a fish return.

There is an OK guide to understanding what you see on the sonar screen at the link below. It if pretty technical but parts of it may help you out.

An X96 owners manual can be downloaded from

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1 Answer

Lowrance 330c screen says '' boot failed''

Try a hard reset:

1. Turn the LMS-330 off
2. Press and hold the ZIN, ZOUT, and PWR buttons
3. Release the three buttons once you see the "warning, do not rely..." message appear

If you get that far, the problem is solved. If you get boot failed again, try installing the latest update which can be downloaded from

If you still get boot failed, you will need to get the LMS-330 repaired/replaced. You can contact Lowrance support at 800-324-1356 or email them by going to

Mar 22, 2009 | Lowrance LMS-330C GPS Receiver

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