Notices
Marine Electronics Forum

Garmin GSD 26 Chirp Issue

Old 07-10-2014, 01:29 PM
  #1  
Admirals Club Admiral's Club Member
THT sponsor
Thread Starter
 
Join Date: Nov 2007
Location: Stuart, FL
Posts: 1,390
Received 185 Likes on 94 Posts
Default Garmin GSD 26 Chirp Issue

I'm having a problem with my Garmin GSD 26 Chirp reading bottom in deep water.

In a nutshell, we built our 2850 last summer and since day 1 I've never had the GSD26 displaying good results on either of my 7212 displays, specifically in any type of deeper water. My transducer is an R111LH which is a 2kw and a crazy amount if power. Other friends with the exact same setup are easily reading bottom in 2500' while running at 30 knots. I can barely mark bottom at 30 knots period, and I lose bottom and the depth starts flashing after about 500' or so of depth. I understand my issue is not common problem and most likely an isolated issue of some sort but it's EXTREMELY frustrating considering all the money we spent going with the Garmin Chirp technology. This GSD26 should be painting a Picasso for us no matter what the depth.

I have the latest software upgrade but my guess is this has something to do with the low frequency side of the Chirp since it's only a deeper water issue. I suppose their is also the possibility of it being an install issue, but my bet is not on that. In shallower water going slower at trolling speed it marks wrecks and fish great with no problem down to around 300'. I've tried messing with all settings, manual vs automatic, and it doesn't seem to matter. My friends units are all on automatic and reading perfectly in super deep water right out of the box.

I'm waiting on the Regional Sales Manager for Garmin to return my Email from last week. They're customer service has been great in the past and for the amount of times I recommend their products to others I'm just hoping to get resolution to this problem as soon as possible. All the other Garmin systems on our boat are flawless.

Any ideas or thoughts on troubleshooting this issue would be greatly appreciated!
Old 07-10-2014, 01:45 PM
  #2  
Member
 
Join Date: Jun 2008
Location:
Posts: 49
Likes: 0
Received 0 Likes on 0 Posts
Default

More likely to be the transducer rather than the GSD26 black box i would think. How old is the transducer ?What it all installed at the same time?
Old 07-10-2014, 02:24 PM
  #3  
Admirals Club Admiral's Club Member
 
Join Date: Sep 2011
Location: Chesapeake VA
Posts: 7,659
Received 16 Likes on 15 Posts
Default

May wanna do a pic to verify the ducer is installer properly regarding tilt etc
Old 07-10-2014, 02:27 PM
  #4  
Senior Member
 
Join Date: Sep 2011
Posts: 5,216
Likes: 0
Received 1 Like on 1 Post
Default

I could read good bottom with an M265 high frequency down to 850 feet. That is as deep as I was able to take it. I would assume similar high frequency capability from yours so you should be getting at least that deep on the high side.
Old 07-10-2014, 04:23 PM
  #5  
Admirals Club Admiral's Club Member
 
Join Date: Mar 2013
Posts: 308
Likes: 0
Received 5 Likes on 4 Posts
Default

Reading at speed has a lot to due with proper transducer install.
Old 07-10-2014, 04:40 PM
  #6  
Admirals Club Admiral's Club Member
THT sponsor
Thread Starter
 
Join Date: Nov 2007
Location: Stuart, FL
Posts: 1,390
Received 185 Likes on 94 Posts
Default

Thanks for the feedback so far gentlemen. My goals when setting up the boat with this electronics package are to blue marlin troll in the deep waters off Abaco Bahamas, daytime dropping on the bottom for swords off the SE Florida coast, and deep dropping the Bahamas... all requiring being able to read solid bottom for success. Even at trolling speed and drifting, right now I can't mark squat consistently much past 700' or so. Something is definitely not right. The R11LH 2KW transducer we have is glassed into the bilge and shoots through the hull. A friend has the exact same transducer on his new Grady and it has a showroom quality display no matter how deep he's fishing, running at 30 kts, etc. Could certainly be a transducer issue, but won't know until Garmin can have a look at everything.
Old 07-10-2014, 05:34 PM
  #7  
Admirals Club Admiral's Club Member
 
Join Date: Mar 2013
Posts: 308
Likes: 0
Received 5 Likes on 4 Posts
Default

Chirp transducers are manufactured for certain installations. They generate a lot of heat. "Glassed into the bilge and shoots through the hull"?
Old 07-11-2014, 03:07 AM
  #8  
Senior MemberCaptains Club Member
 
Join Date: Nov 2004
Location: Athens, Greece
Posts: 1,140
Likes: 0
Received 1 Like on 1 Post
Default

Although it could be the transducer itself that has a problem, it sounds like a transducer installation issue. With proper guidance you can remove the transducer from the box and dip it over the side of your boat for a quick test. PITA, I know, but it's worth a try.
Get some pics of the installation and the area of the hull (underside) where it shoots through. Obstructions and turbulence in that area can easily render the transducer useless.
Was it installed at the factory?
Old 07-11-2014, 03:24 AM
  #9  
Admirals Club Admiral's Club Member
THT sponsor
 
InternationalMarineMike's Avatar
 
Join Date: Feb 2014
Posts: 8,338
Received 221 Likes on 103 Posts
Default

Exactly what these guys are saying. At speed you may be forming air bubbles and not being able to read properly. I read the post and may have missed it. What happens if you go out to 2500 feet and just shut the motors down? Can you read bottom?
Old 07-11-2014, 05:41 AM
  #10  
Admirals Club Admiral's Club Member
THT sponsor
Thread Starter
 
Join Date: Nov 2007
Location: Stuart, FL
Posts: 1,390
Received 185 Likes on 94 Posts
Default

Originally Posted by nicktg View Post
Was it installed at the factory?

Yes, Bluewater installed it at the factory during the build.

Originally Posted by InternationalMarineMike View Post
Exactly what these guys are saying. At speed you may be forming air bubbles and not being able to read properly. I read the post and may have missed it. What happens if you go out to 2500 feet and just shut the motors down? Can you read bottom?
Nothing, it will not read bottom anywhere near that deep. You can read bottom going slow or drifting in about 600' or so, but it seems to lose the lock on the bottom and the depth reading starts flashing once that happens at the last depth it was locked onto before losing bottom. Then, randomly, it will lock bottom again briefly and diplay the new depth until it flashes that same depth and loses bottom lock again. While all this is going on, the display may sometimes have a "skipping" appearance to it with bars going from the top to bottom of screen.
Old 07-11-2014, 05:47 AM
  #11  
Admirals Club Admiral's Club Member
THT sponsor
 
InternationalMarineMike's Avatar
 
Join Date: Feb 2014
Posts: 8,338
Received 221 Likes on 103 Posts
Default

Was the equipment installed by Garmin Certified installers? If so then that doubles your warranty and you do not have to leave your house to get it fixed. Garmin pages the bill to have it removed and replaced.

If it was not then you have a one year and you do the work. I would say it may be the easiest to remove the GSD26 first. If this was my customer I would take one off my shelf and do a quick swap out of the Garmin unit. We would know in a few minutes that way.
Old 07-11-2014, 06:20 AM
  #12  
Senior Member
 
Join Date: Feb 2005
Location: Norway
Posts: 16,444
Likes: 0
Received 1,128 Likes on 918 Posts
Default

Originally Posted by offshraddict View Post
Chirp transducers are manufactured for certain installations. They generate a lot of heat. "Glassed into the bilge and shoots through the hull"?
I was also considering heat as a possible explanation. GSD26 is monitoring the transducer internal temperature, if the transducer gets overheated the sounder will reduce the transmit power.
Old 07-11-2014, 06:24 AM
  #13  
Senior Member
 
Join Date: Sep 2011
Posts: 5,216
Likes: 0
Received 1 Like on 1 Post
Default

Have you checked the fluid levels?
Old 07-11-2014, 06:53 AM
  #14  
Admirals Club Admiral's Club Member
THT sponsor
Thread Starter
 
Join Date: Nov 2007
Location: Stuart, FL
Posts: 1,390
Received 185 Likes on 94 Posts
Default

Originally Posted by stiletto View Post
Have you checked the fluid levels?

I did a while back and it was fine, but will check it again later today just to confirm.
Old 07-11-2014, 07:14 AM
  #15  
Senior Member
 
Join Date: Sep 2011
Posts: 5,216
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by Captain_Dave View Post
I did a while back and it was fine, but will check it again later today just to confirm.
Is there any of the sealant covering the fiberglass under the transducer?
Old 07-11-2014, 10:40 AM
  #16  
Senior Member
THT sponsor
 
Join Date: Aug 2011
Location: Beaufort NC
Posts: 6,629
Received 3,325 Likes on 1,519 Posts
Default

Also make sure the installer didn't substitute smaller gauge wiring from the ducer to the GSD-26. I know it sounds unbelievable but I've corrected exactly the same symptoms you're experiencing on installs done by some VERY reputable electronics installers, using either existing ducer wiring or even cat 5 cable because it was easier to pull through tight chases!
Old 07-11-2014, 10:43 AM
  #17  
Admirals Club Admiral's Club Member
THT sponsor
Thread Starter
 
Join Date: Nov 2007
Location: Stuart, FL
Posts: 1,390
Received 185 Likes on 94 Posts
Default

Originally Posted by stiletto View Post
Is there any of the sealant covering the fiberglass under the transducer?

Not sure what sealant you're talking about. Also don't know how I'd be able to check that?
Old 07-11-2014, 10:50 AM
  #18  
Senior Member
 
Join Date: Sep 2011
Posts: 5,216
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by Captain_Dave View Post
Not sure what sealant you're talking about. Also don't know how I'd be able to check that?
They use a sealant to adhere the wet box to your fiberglass hull. The wet box should be cut to make the dead rise of your boat where it is installed. Also the sealant should only be used around the edge of the wet box to adhere the box. I have seen previous posters where the whole fiberglass hull inside the wet box was covered with sealant. To check it you would take the tank top off and look. Should be nothing but fiberglass and a bead of sealant around the bottom of the wet box.
Old 07-11-2014, 11:13 AM
  #19  
Senior Member
 
Join Date: Feb 2005
Location: Norway
Posts: 16,444
Likes: 0
Received 1,128 Likes on 918 Posts
Default

You wrote the transducer is glassed in, several of us seems to be uncertain about how the transducer is installed. R111LH can be pocket mounted or be an in-hull, exactly how is it mounted?
Old 07-11-2014, 11:52 AM
  #20  
Senior MemberCaptains Club MemberPLEDGER
 
Join Date: Oct 2002
Location: mass/Point Judith, RI dockage
Posts: 11,989
Received 503 Likes on 295 Posts
Default

If you are shooting through the hull, the hull cannot be cored and it can't have wood or any voids. Solid glass is about the only thing that will work well. Even then, the thickness of the glass is important (some thicknesses are better than others, not just thinner is better than thicker).

Check with semperfifishing if you have any doubts.....

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.