I have a LMS-480 M that powers up fine. That is until I try to hook up the GPS module (LGC2000). Every time I try to connect the power wires to the source, it blows the fuse. The unit itself works fine as long as I hook it up alone. The problem is trying to get the GPS module hooked up. It is a brand new module that I just got directly from Lowrance. I have tried to hook it up directly to the battery, to the fuse panel, connected to the unit power wires, and completely separate. It still blows fuses. Any ideas? Thanks!!
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Re: keeps blowing fuses
It has a short in the wiring which is "not user fixable". I think the wires are crossed. Take it back, they need to repair or replace it. I suggest you replace it. Take the GPS with you show you can show them the problem. If you bought this on line call Lowrance and find the nearest repair center. Repair it yourself and you loose the warentee.
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the lcd is going out and will cost more to fix it then the cost of the gps....my advice is to get a new one from bestbuy and get the 4 yr performance service replacement plan so next time you have a problem like this they will replace it for free.
First I'd suggest you to do an UPDATE. There is a FREE SOFTWARE UPDATE called "1.9.0" and it can be taken from here. If this update will not help and if you ill get the same message that means your GPS module is defective and it has to be replaced. But before of that you have to check these steps to ensure that everything is OK: # make sure that a proper power is supplied to the unit # check and
clean connections between the display portion of the unit and the GPS
module. There is an intermediary connection on a power cable that
the GPS module connects to. Clean all connections with an anti-corrosion
cleaner for electronics as needed. # reset the unit
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.
had same problem with lms337. i had upgraded the unit but had not upgraded the lms2000 gps module. i was turning the isolator on in the boat which powers up gps module, if the lms337 is not powered up as well the gps unit goes to sleep. the upgrade fixes it by checking that the unit has not been turned on periodically. otherwise as soon as you power up gps module also turn on lms337. lowrance product support sorted this for me.