Question about Lowrance Lms 520c 5" Screen Color External Gps And 200 Khz Sonar System

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I have a Lowrance LMS 520 C with a 3000 series receiver. This is original equipment installed on my Ranger 188 VSI. I am getting a rapid contactor noise comming from the transducer. What do I do? Thank You, Ron Stanley

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  • Anonymous Mar 16, 2014

    I'm not able to download the update software due to having a newer versions of windows. thought i'll try a hard reset. how do I reset the device

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  • 12,061 Answers

Hi, well the best thing to do is to add suppressors to your spark plug leads, OR get Suppressive Spark Plugs, themselves, (Recomended) and Capacitors on ALL Positive Connections to Earth
I recommend , 0.1uF 500 V AC CERAMIC, or Axial Polyester Capacitors.
Capacitors DO NOT conduct DC, therefore, ONLY the AC "Hash" component of the signal is affected. the AC flows through, the capacitor, and then to earth.
Also make sure you Earth connections are good and robustly attached, to clean metal surfaces, and then cover with Petroleum Jelly.
You can get suppression Capacitors from almost any Car Electrical place or a Auto Electrician. They are easy to fit, and make a huge difference.
You need to do it, on the Coil, the Distributor and all spark plug leads too.
Another good thing to do as well, is to convert your car to a "Points-less distributor" Usually one can retro-fit a Sensor in place of the Points, this makes a remarkable difference. Of course some cars already have it.
Again with any thing that's using a Shielded Cable, (Coaxial Cable), then, add capacitors at each end, of the cable, put a Capacitor, from the "Shield" to Earth, at each end. Then any signals "Induced" into the "Shield" will again be routed to earth.

Posted on Aug 28, 2010

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i've repaird this by installing a secondary powerswitch and disconnecting the power switch on the keypad. It's an involved repair but it can be done.


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Hi,when i switch on my lms-332c the map does not come up on the screen.If I remove and replace the map card it works perfectly. Can I fix this? regards nigel


I am guessing that the card you are using is a NAVIONICS chart? There have been some Lowrance units that were made around the same time that have had problems recognizing a Navionics chart right from power up.

Make sure the LMS-332 has the latest firmware version which can be downloaded from http://www.lowrance.com/en/Products/Marine/Full-Size-SonarGPS-Chartplotter-Combos/LMS-332C/Downloads/LMS-332C-Software-Update/

If the update doesn't help, this is going to be a compatibility problem with the LMS-332 and that particular card. You will need to replace the card or upgrade to a newer unit...but probably can just get used to removing and replacing the card when you turn the unit on.

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I have a lowrance LMS 332C GPS. After 5 years I


The LGC-2000 is bad would be the most likely cause, but if this started right after you changed the cables, Try connecting the NMEA 2000 network to a different power source than the main power. If you still have the original cables, and you didn't have the problem before, try using those again to make sure there isn't anything wrong with any of the new cables.

But most likely, the LGC-2000 is toast and you will want to contact Lowrance support to see about getting it repaired/replaced.

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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 http://www.lowrance.com/en/Downloads/Product-Software-Updates/

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 http://www.lowrance.com/en/Support/Product-Support/Contact/

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I have a manual for this unit but i'm still using mine so not willing to sell it to you. I'm in Melbourne and you're welcome to borrow it for a week or so or i could probably photocopy/scan certain sections for you and email them if it helps. Let me know if you still need it by emailing me at joshklat@hotmail.com

Cheers,
Josh

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