Question about Humminbird Fishing System, 787c2 Combo Without Gps 4066801 Plus

1 Answer

Our new 787C2 fish finder by Humminbird is not working correctly. It worked for our first view fishing trips, but now the display is not showing any color, structure or fish. It tells us the depth and the temperature, but no color images are displayed. Do you know what the problem is?

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  • Humminbird Master
  • 18,108 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

Posted on Feb 19, 2018

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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  • 64 Answers

SOURCE: go about getting operational anual for fish finder humminbird

I found what you are looking for. Go to: http://www.humminbird.com/support/FAQ.aspx?faqid=72

You can download the operating manual.

Posted on Nov 26, 2008

  • 98 Answers

SOURCE: MY 300 SERIES HUMMINBIRD GPS FISHING FINDER HAS

I would say your battery is not putting out enough voltage. Have it checked at any Auto parts store.

Posted on Jun 05, 2009

  • 64 Answers

SOURCE: turns off

The first thing you need to check is if you have sufficient power going to the fishfinder. Take a multimeter and measure the dc voltage going to the display when the unit is off and also on. If this is below 12 vdc this is your problem. You will need to check for loose connections and possibly replace your battery.

If the voltage is good then the problem lies within the display. Unfortunately, you would have to contact Humminbird directly to return the display for repair or purchase a new fishfinder.

Posted on Jun 29, 2010

  • 29 Answers

SOURCE: I have Humminbird 525 fish

If you have someone that has the same or simular unit just slide there control head to the base just to make sure you have enough voltage and current to power the unit. If the other unit powers up then there is a problem with the control head. Then you will need to call customer service to get it resolved.

Posted on Jan 26, 2011

aloha27
  • 696 Answers

SOURCE: i have a humminbird 937c fish finder gps and chart

Hi!

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

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

Happy Boating!

Posted on Jun 20, 2011

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Turns off


The first thing you need to check is if you have sufficient power going to the fishfinder. Take a multimeter and measure the dc voltage going to the display when the unit is off and also on. If this is below 12 vdc this is your problem. You will need to check for loose connections and possibly replace your battery.

If the voltage is good then the problem lies within the display. Unfortunately, you would have to contact Humminbird directly to return the display for repair or purchase a new fishfinder.

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