Question about Garmin Gsd 21 Sounder Blackbox Fishfinder Module

2 Answers

Sounder not working

When i put the sounder on the whole screen is filled with interference

Posted by on

2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

My gsd 21 does not work with my gps 2106

Posted on Jun 11, 2010

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Novelist:

    An expert who has written 50 answers of more than 400 characters.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

  • Expert
  • 113 Answers

Interference like that is usually caused by electrical noise. Does it happen when everything else on the boat is turned off? If the answer is no, then you can isolate the source of the interference by turning things on one at time. Follow your transducer cable and make sure it has not been damaged or altered in any way.

Also make sure that your gain is set to auto

The GSD 21 has an LED indicator light on it. If it detects a malfunction the LED will flash in distinct colors or patterns. In the troubleshooting section of the owners manual there is a list that explains what each flash pattern means.

Posted on Jul 26, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Can i put lowrance 5hdi sounder and a lowrange sounder/gps 7hdi on the same transponder unit?


If you want to use two head units off of 1 transducer the answer is yes. You will require a transducer switch that allows you to select which head unit receives the sonar signal.
If you want to swap head units utilizing the same transducer the answer is also yes you can do that.

Dec 19, 2014 | Lowrance X515cdf 5" Color Lcd Sounder With...

2 Answers

Black screen


If it is connected to the boat motor check the voltage that is coming from the engine and clean the battery post. This solved the screen flickering.

If you don't want to do that just call Northstar customer support and see what they suggest.
Phone (Toll-free) 1-800-628-4487 or (Direct) 603-324-2042
That will get you better support.

Jun 09, 2010 | Northstar Explorer 657...

1 Answer

I have a gps Map 498-depth sounder not working? Have new transducer from Garmin-it flashes "00"-it is not connected to boat yet (transducer)-need it be or can I put in a bucket of water (need it be in...


If the transducer is out of the water, you will not get a reading and see the flashing depth. You should hear and feel the clicking in the transducer when out of the water and working properly. Are you getting a temp reading when out of the water?

May 16, 2010 | Marine Electronics

2 Answers

Can not get clear reading of bottom when travellling over 9 knots


Your in hull ducer is getting turbulence. (in hull or not) A transducer will stop working is the tiniest cabitation or air bubble interferes. If possible, relocate the ducer. If you have a transom mounted ducer, try angling the leading edge up. This is a 90 % chance caused by turbulence on ducer. The other possibility, al;though remote is that you alternator or ignition system is interfering after a certain RPM on the motor.
Try first to manually gain the FCV620. You will always need to manual gain set the unit if you have an in hull ducer.

Mar 02, 2010 | Furuno 520 Ihd Adj In Hull F/ 6000 600l...

1 Answer

Sounder picture on e 80 freezes 20 min. after power on.


your feeling is correct on this it is still probably software! but also be aware that the power in connections are very susceptible to vibration and strains and once cracked inside they get a mind of their own. If this is a come and go problem that won't resolve, reflow the solder joints inside the DSM.

Jan 14, 2010 | Raymarine Dsm30 Digital Sounder Module

1 Answer

Depth sounder


the transducer has to be in the water or attached to the inside of the hull if fiberglass with no air between the hull and the transducer. It doesn't transmit thru air.

Mar 12, 2009 | Raymarine Marine Electronics

1 Answer

Faria Depth finder


I've found this manuals in Faria's site:

Depth sounder:
http://faria-instruments.com/site_manuals/IS0091F.pdf

Bombardier Depth Sounder:
http://faria-instruments.com/site_manuals/IS0138_C_digital_depth_sounder_owners_manual.pdf

Depth Sounder, Flushmount:
http://faria-instruments.com/site_manuals/IS0141c.pdf

Depth Sounder, Flush Mounted, Remotely Switched:
http://faria-instruments.com/site_manuals/IS0229_A_Digital_depth_sounder.pdf

there are also other useful manuals in the bottom of the page:
http://www.faria-instruments.com/downloads.php

Jul 14, 2008 | Faria Marine Electronics

Not finding what you are looking for?
Garmin Gsd 21 Sounder Blackbox Fishfinder Module Logo

387 people viewed this question

Ask a Question

Usually answered in minutes!

Top Garmin Marine Electronics Experts

Kirk Augustin
Kirk Augustin

Level 3 Expert

2019 Answers

yadayada
yadayada

Level 3 Expert

61168 Answers

Michael Thomas
Michael Thomas

Level 3 Expert

3051 Answers

Are you a Garmin Marine Electronics Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...