20 Most Recent Humminbird Fishing System, 787c2 Combo Without Gps 4066801 Plus Questions & Answers


This could be a lot of things. The unit employs multiple signals to gather data and it could be the transponder not getting the signal or it could be something simple like the sensitivity. Humminbird 757c Operation Manual Sensitivity

Humminbird... | Answered on Feb 19, 2018


No, you need a new one. They are a sealed unit and not repairable.

humminbird 143 replacement transducer Google Search

Humminbird... | Answered on Sep 03, 2018


The unit may be defective.

Humminbird... | Answered on Feb 13, 2018


Ask any 4 year old... they are geniuses when it comes to handheld electronics these days

Humminbird... | Answered on Nov 02, 2017


With this type of issue.. its the transducer mounting ...99% of the time!!

Humminbird... | Answered on Sep 25, 2017


I would use slip rings to tie existing cable to prop motor support shaft and mount transducer to motor housing. 'slip ring'--metal ring a little bigger than shaft with a nipple the size of the cable. OR call the bird at 1-800-633-1468 or www.humminbird.com/Category/Company/Contact-Us/ and use some southern/country slang when talking. Best of luck 'you all'.

Humminbird... | Answered on Nov 02, 2016


First steps (you may have done done) check all wiring connections ,transducer, power,ext. at both ends. Attempt power up again. No change. Call 1-800-633-1468 with model & serial #'s. OR Disconnect all cable connections from unit and with a strip of aluminum foil short out all the connections on the 898c.(not the cable). Attempt power up again. If unit will let you go to 'System Status' screen & record. Hope your unit works.

Humminbird... | Answered on Oct 28, 2016


Hi Ken
A little wiring 101 is in order here I think.
NMEA out (+ and -) from your GPS goes to NMEA in (+ and -) of your VHF.

Hope this helps you out

Humminbird... | Answered on Mar 14, 2016

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