Jump to content
  • GUESTS

    If You  want access  to member only forums on FM, You will need to Sign-in or  Sign-Up now .

    This box will disappear once you are signed in as a member.

  • 0

GPS Module Not Responding


Tadpoletodd

Question

Hello All,

Before I make a call to Lowrance I thought I'd give the forums a shot. I have a GlobalMap 3500 and last night while trolling the unit lost satellite reception and I received the following message, "GPS Module Not Responding". confused.gif I'm desperate as I'm taking a couple family members on a fishing trip this Friday. frown.gif I've checked all my manuals and can't find any reference to this error. Did my receiver just take a dump? I checked all connections and everything appears legit.

Any information on how to diagnose the problem and fix it would be most appreciated!!!

Thanks, Todd

Link to comment
Share on other sites

12 answers to this question

Recommended Posts

  • 0

The GPS antenna on your unit gets power from the unit itself.

Let's do it like you would treat a PC, shut unit off, disconnect power cord (or at least 1 pole) wait 30 seconds then replug everything up and fire it up.

Link to comment
Share on other sites

  • 0

The gps module gets power through the network port on the head unit but there are 2 power leads for the head unit. They were obviously both connected at one time since it used to work, but just be aware that there are two power leads (ie. 2 blacks and 2 reds) if you're tracing power, looking for blown fuses, checking connections, etc. But before you get into all of that try Valv's idea, or try turning off the master power in your boat if you have a master power switch. Good luck.

Link to comment
Share on other sites

  • 0

I got the same message from mt GPS unit.

Lowrance said to check the plug-in from the antenna to be sure that you have a good connection at the GPS. If you have the extension cable for the antenna to the GPS, check that connection also. (That was my problem!) If it is not a connection, your antenna is bad! frown.gif Very costly to replace! Around $200.!! shocked.gif

Cliff

Link to comment
Share on other sites

  • 0

I have had the same problem two times and by turning the unit off and unpluging it that seemed to work for me.

Link to comment
Share on other sites

  • 0

Thanks all!

I'll be working on this tonight and we'll see what happens. I'll post my results.

Crossing my fingers man!

Todd

Link to comment
Share on other sites

  • 0

When ever I had the same problem on my LMS350A I had to remove the power and reconnect.With the unit powered up unplug the GPS module cord from the back of the unit and plug back in. Seems like it needed a jump start in order for the unit to start responding again.

Link to comment
Share on other sites

  • 0

Well guys, here's my deal. After going through my system tonight I believe I'm narrowing down the problem.

The GPS unit power cord (blue plug) splits into three lines:

1. GPS unit power line

2. NMEA 2000 power line

3. Data line (which I'm not using)

I noticed while going through the system the fuse from the NMEA line was blown. While replacing the fuse it immediately blew again. About three fuses later I discovered that if I unplugged the LGC-2000 cord that goes from the unit to the antenna, the fuse wouldn't blow. As soon as I plugged this line back into the GPS the fuse blew again. I tested that scenario again to make sure it was the case and it was.

Now what?!? Where's my problem? Do I have a bad LGC-2000 cord? A bad LGC-2000 antenna? Or, is the problem in the main power line going from the unit to the battery? That fuse never blew. I'm completely out of ideas here. I also noticed slight corrosion around what I believe is the NMEA power negative pin in the main power blue plug. I noticed a little moisture in the smaller LGC-2000 plug-in as well. Could that be causing the short?

Help please! Any ideas that may help me fix this are welcome. confused.gif

Link to comment
Share on other sites

  • 0

The gps module is powered all the time, whether or not the head unit is on. That is why the fuse is blowing when you connect the gps module to the head unit. I believe you are correct in that it's between the head unit and the gps module.

The corrosion and moisture you noted could be the culprit, these units are very sensitive so it's probably a good spot to start. If you can't solve it by getting rid of the corrosion the next step might be to try a slightly larger fuse (I assume you're using 3 amp fuses). After that I'd move on to trying to test another gps module on your network if possible, or try your module on someone else's network if possible.

The gps module cable is only 1-2 feet long, if you have a longer extension cable between the gps module and the head unit you could try taking that out if you can get the module and the head unit together without it.

Good luck, you're on your way and I hope you get it nailed.

Link to comment
Share on other sites

  • 0

You want to go to Lowrances self help pages. You will need a multimeter. They have pictures and pinouts for trouble shooting this problem. Start with their NMEA 2000 Network Troubleshooting Guide.

Link to comment
Share on other sites

  • 0

I feel like I'm close to figuring this out; with everyone's help of course.

I am using 3-amp fuses and going through quite a few of them I might add. I'll try a 5-amp and see if that works. If not, I'll remove my module extension line and hook the module direct to the back of the unit.

I only have a few more nights available to figure this out. Whew...the pressure is on! laugh.gif

Link to comment
Share on other sites

  • 0

Tadpoletodd

Be carefull when you up scale the fuses you could have a monster on your hands. Unfortunetly i have allot of problem customers when it comes to Lowrance GPS. The best advice I can offer is to get some Dieelectric greese for all the connectors first, Second check the ground and all wires that may have a wear point from rattleing around in the boat. And finally most of the first post were wrong, the unit does have it's own power supply. You should treat this unit much like a car amp and run as heavy wire to it for power as you cann get by with 8 gauge would be my suggestion. You will notice a link up time difference as well, it will be faster.

Link to comment
Share on other sites

  • 0

Quote:

Tadpoletodd

And finally most of the first post were wrong, the unit does have it's own power supply.


Please cite where someone has said it doesn't. confused.gif

Link to comment
Share on other sites

Guest
This topic is now closed to further replies.


  • Your Responses - Share & Have Fun :)

    • leech~~
      Nope not me.  May want to go nextdoor and ask around?  
    • smurfy
      Looks to me like Leech brought his chair home!!😅😆
    • Brianf.
      I'm not there, so I can't tell exactly what's going on but it looks like a large area of open water developed in the last day with all of the heavy snow on the east side of wake em up Narrows. These two photos are from my Ring Camera facing north towards Niles Point.  You can see what happened with all of snow that fell in the last three days, though the open water could have been wind driven. Hard to say. .  
    • SkunkedAgain
      Black Bay had great ice before but a few spots near rockpiles where there were spots of open water. It looks like the weight of the snow has created a little lake in the middle of the bay.  
    • LakeofthewoodsMN
      On the south end...   Thanks to some cold spring weather, ice fishing continues strong for those still ice fishing.  The bite remains very good.  Most resorts have pulled their fish houses off for the year, however, some still have fish houses out and others are allowing ATV and side by sides.  Check social media or call ahead to your favorite resort for specifics. Reports this week for walleyes and saugers remain excellent.   A nice mix of jumbo perch, pike, eelpout, and an occasional crappie, tullibee or sturgeon being reported by anglers. Jigging one line and using a live minnow on the second line is the way to go.  Green, glow red, pink and gold were good colors this week.     Monster pike are on a tear!  Good number of pike, some reaching over 45 inches long, being caught using tip ups with live suckers or dead bait such as smelt and herring in 8 - 14' of water.   As always, work through a resort or outfitter for ice road conditions.  Safety first always. Fish houses are allowed on the ice through March 31st, the walleye / sauger season goes through April 14th and the pike season never ends. On the Rainy River...  The river is opened up along the Nelson Park boat ramp in Birchdale, the Frontier boat ramp and Vidas boat ramp.  This past week, much of the open water skimmed over with the single digit overnight temps.   Areas of the river have popped open again and with temps getting warmer, things are shaping up for the last stretch through the rest of the spring season, which continues through April 14th.   Very good numbers of walleyes are in the river.  Reports this week, even with fewer anglers, have been good.  When temps warm up and the sun shines, things will fire up again.   Jigs with brightly colored plastics or jigs with a frozen emerald shiner have been the desired bait on the river.  Don't overlook slow trolling crankbaits upstream as well.   Good reports of sturgeon being caught on the river as well.  Sturgeon put the feed bag on in the spring.  The bite has been very good.  Most are using a sturgeon rig with a circle hook loaded with crawlers or crawlers / frozen emerald shiners. Up at the NW Angle...  Ice fishing is winding down up at the Angle.  Walleyes, saugers, and a number of various species in the mix again this week.  The bite is still very good with good numbers of fish.  The one two punch of jigging one line and deadsticking the second line is working well.   Check with Angle resorts on transport options from Young's Bay.  Call ahead for ice road guidelines.  
    • CigarGuy
      With the drifting, kind of hard to tell for sure, but I'm guessing about a foot and still lightly snowing. Cook end!
    • PSU
      How much snow did you get on Vermilion? 
    • Mike89
      lake here refroze too...  started opening again yesterday with the wet snow and wind...  very little ice left today...
    • Hookmaster
      A friend who has a cabin between Alex and Fergus said the lake he's on refroze. He texted me a pic from March 12th when it was open and one from 23rd when it wasn't. 🤯
    • SkunkedAgain
      I don't think that there has been any ice melt in the past few weeks on Vermilion. Things looked like a record and then Mother Nature swept in again.   I'll give my revised guess of April 21st
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use and Privacy Policy. We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.