Humminbird 1198c si combo gps not working

sounds to me your sat. receiver has gone out is it a internal or external receiver if external replace it if internal . . .new unit

Do a master reset on the unit. restart and cross your fingers. If this does not resolve the problem you probably have an internal fault with the GPS unit.

If the new harness / parts are listed for use with this model GPS, it should work - unless you have miswired something. Double-check your work. Make sure all connections are made up tight. Pay particular attention to the ground wire. Relying on the boat to pass ground it not reliable. Look for damaged or cut cable from power source and transducer. You may wish to troubleshoot with a meter or a test light to be sure power is available at the GPS. Good luck!

This model has two versions, one with the GPS as an external piece, and one with the GPS mounted internally. If the location of the internal mounted GPS cannot get a clear shot at the satellites overhead, it will tell you it cannot get a GPS fix. If it says it is disconnected, you may have a problem with the internal GPS. There are external GPS pucks available for this unit. Here is a helpful website.

http://www.humminbird.com/leading_innovation/fishing-systems.aspx

Hi!

No problem. Here's the link to your manual!

http://www.manualnguide.com/dl/15864/

Happy Boating!

You can use the Navionics and also LakeMaster Cards.

I had the same problem. I talked to 3 different technicians on the Humminbird support line about it. All 3 of them confirmed that this is how their technology works. They ping the GPS satellites continuously, and at low speeds the GPS accuracy causes the speed measurement to fluctuate wildly. It smooths right out when you go faster than 3 MPH, since your boat moves far enough at that speed that the GPS accuracy is no longer a problem.

Seems like they could easily overcome this issue by averaging GPS readings over a longer time period at low speed (i.e. give the boat enough time to move far enough to eliminate the accuracy issues), but they don't do that.

It was a big issue for me since I do a lot of trolling at low speed and need an accurate speed indicator, so I returned the product and bought a Lowrance instead. Lowrance doesn't have this issue.

Hi!
I suspect that the software is corrupt in your unit.
Being a newer model, if it's still under warranty, contact humminbird or one of their service centers for repair:
Authorized Service Centers - Canada Bay Distributors
119 Progress Ct.
P O Box 70
North Bay, Ontario, Canada P1B 8G8
Tel: (705) 476-6010
Email: [email protected]

Mike's Reel Repair
#108-31060 Peardonville Rd
Abbotsford, BC V2T 6K5
Tel: (604)855-1119
Email: [email protected]
www.mikesreelrepair.com
PTG Electronics Ltd.
3092 Portage Ave
Winnipeg, MB R3K 0Y2
Tel: (204)831-0862
Fax: (204-888-6207
Email: [email protected]
Where to ship your items:
(if you live in the U.S.)
Humminbird
Attn: Service Dept.
678 Humminbird Lane
Eufaula, AL 36027
Who to call:
Toll-free: 1-800-633-1468
Monday - Friday
8:00am - 4:30pm CST

gps is is just that...GLOBAL so I don't think the mountains will be the entire issue. Try in a few different spots. Make sure there is no overhead obstruction like trees and such.
Reset the sounder to factory defaults, the manual will tell you how. These factory settings are made for your unit to work 'right oout of the box'.
Best of luck!
Mike

hi
Did u bought Humminbird 787c2+GPS or just Humminbird 787c2 ?

If u bought Humminbird 787c2+GPS i like to know, do the built in GPS UniMAP work in australia ? i bought one myself. Thanks.