2d sonar not working

[Sakman33]

Hi all- so i went on the water the other day and my 2d sonar wasn’t working on my console graph nor was my depth reading on my 1198( i know it’s a dinosaur). However, side imaging and Di was working, and when i switched it over to the bow ducer it worked fine. So I’m thinking it’s not a unit issue. Could this be a wiring issue or a bad thru hull ducer or regular ducer issue? And Anything else i can do to problem solve this? Any help would be appreciated. Thanks

[Wayne P.]

Where is the 2D source, HDSI transducer or a separate one as a shoot-thru or transom?

[Sakman33]

Hey Wayne- i believe my 2d sourse is from HDSI and i also have a through hull ducer. Hopefully I answered your question??? Did I mention the depth on my graph isn’t working? Thanks for the reply

[Wayne P.]

If the HDSI transducer and the shoot-thru transducer are connected to the display with a Y cable, the 2D comes from the shoot-thru all the time. The 2D piezo in the HDSI transducer is not connected to the unit =no wires.

You can check where the issue is by diconnecting both transducers from the Y cable, disconnect the Y cable from the display and try each transducer directly connected to the unit to determine if it is a transducer issue. Do that on the water so you get depth.

If both do OK for 2D, then you have a faulty Y cable.
If the HDSI transducer does 2D OK and the shoot-thru doesn't, you need to replace or re-install the shoot-thru.
In neither transducer works for depth, the display is faulty--no longer serviceable by Humminbird.

[Sakman33]

Thanks, Wayne! Appreciate the feedback